码图C++作业
新增了目录和代码复制功能/doge
第七章 作业1
输出n!
#include <iostream>
using namespace std;
int factorial(int n){
int result=0;
if(n<0) cout<<"error!";
else if(n==0||n==1) result=1;
else result=factorial(n-1)*n;
return result;
}
int main(){
int n,m;
cin>>n;
if(n<=12){
m=factorial(n);
cout<<n<<"!="<<m<<endl;
}
else{
m=factorial(12);
cout<<"12!="<<m<<endl;
}
return 0;
}
将回车和制表符转成可见
void expand(char* s, char* t){
int i, j;
for (i = 0, j = 0; s[i] != '\0'; i++){
switch (s[i]){
case'\n':
t[j++] = '\\';
t[j++] = 'n';
break;
case'\t':
t[j++] = '\\';
t[j++] = 't';
break;
default:
t[j++] = s[i];
break;
}
}
t[j] = '\0';
}
输出由星号组成的倒三角形
#include <iostream>
using namespace std;
int main(){
int n;
cin>>n;
if(n%2==0||n<1||n>80) printf("error");
else{
for(int i=0;i<=(n-1)/2;i++){
for(int j=0;j<=(n-i);j++){
if(j<i) cout<<" ";
else if(j==n-i) cout<<"\n";
else cout<<"*";
}
}
}
return 0;
}
=========================================
第七章 作业2
100内能被3整除且个位为6
#include <iostream>
using namespace std;
int main(){
int i,j;
for(i=0;i<=9;i++){
j=i*10+6;
if(j%3!=0) continue;
cout<<j;
}
return 0;
}
100~200内不被3和7整除
#include <iostream>
using namespace std;
int main(){
for(int i=100;i<200;i++){
if(i%3!=0&&i%7!=0) cout<<i;
}
return 0;
}
根据公式输出圆周率
#include<stdio.h>
int main ()
{
double m=0;
int i;
for (i=1;i<=1e8/2;i++)
{
if(i%2==0) m=m-1/(2*(double)i-1);
else m+=1/(2*(double)i-1);
}
if(i%2==0) m=m-1/(2*(double)i-1);
else m+=1/(2*(double)i-1);
printf("steps=%d ",i);
printf("PI=%.5f",4*m);
return 0;
}
输入年、月输出该月的天数
#include <iostream>
using namespace std;
int isleap(int n);
int main(){
int a[12]={31,28,31,30,31,30,31,31,30,31,30,31};
int y,m;
scanf("%d%d",&y,&m);
if(isleap(y)) a[1]++;
printf("days:%d",a[m%12-1]);
return 0;
}
int isleap(int n){
if(n%400==0||(n%100!=0&&n%4==0)) return 1;
else return 0;
}
升序排序，奇数在偶数之前
#include <iostream>
#include <algorithm>
using namespace std;
int main(){
int a,i=0,odd=0,even=0,ev[10],od[10];
for(i =1;i<=10;i++){
scanf("%d",&a);
if(a<0) break;
if(a%2==0) ev[even++]=a;
else od[odd++]=a;
}sort(ev,ev+even);
sort(od,od+odd);
for(int i=0;i<odd;i++){
printf("%d ",od[i]);
}for(int i=0;i<even;i++){
printf("%d ",ev[i]);
}return 0;
}
复制字符串，将'\0'转义
#include<stdio.h>
int main(void)
{
char a1[100],a2[100];
int i;
//gets(a1);
scanf("%s",a1);
for(i=0;i<100;i++){
if(a1[i]=='\0')
break;
else a2[i]=a1[i];
}
//puts(a2);
printf("%s\\0",a2);
return 0;
}
矩阵乘法
#include <iostream>
void Matrix_Mul(int a[3][2], int b[2][4]);
int main(){
int a[3][2]={{1,2},{3,4},{5,6}};
int b[2][4]={{1,0,1,1},{0,1,0,1}};
Matrix_Mul(a,b);
return 0;
}
void Matrix_Mul(int a[3][2], int b[2][4]){
int temp;
for (int i=0;i<3;i++){
for (int j=0;j<4;j++){
temp=0;
for (int k=0;k<2;k++){
temp+=a[i][k]*b[k][j];
}printf("%d",temp);
if(j!=3){
printf(" ");
}else{
printf(" \n");
}
}
}
}
统计子字符串出现次数
#include <iostream>
#include <string.h>
int SubStrNum(char * str,char * substr);
int main(){
char str[40] = "hhhhhh";
char substr[40] ="hh";
SubStrNum(str,substr);
return 0;
}
int SubStrNum(char * str,char * substr){
int len=strlen(str);
int len2=strlen(substr);
int count=0;
int j=0;
for (int i=0;i<len;i++){
if(*(str+i)!=*(substr+j)){
j=0;
}else{
j++;
if(j==len2){
count++;
j=0;
}
}
}printf("match times=%d",count);
return count;
}
计算大整数的差
#include <iostream>
#include <string.h>
#include<stack>
using namespace std;
stack<int> answer;
int BigIntEqual(char* num1,char* num2);
int Sub(char* num1,char* num2);
int main(){
char num1[40];
char num2[40];
scanf("%s %s",num1,num2);
int a=BigIntEqual(num1,num2);
if(a==1){
int len=strlen(num1);
printf("+");
Sub(num1,num2);
}else if(a==-1){
int len=strlen(num2);
printf("-");
Sub(num2,num1);
}else{
printf("0");
}
return 0;
}
int BigIntEqual(char* num1,char* num2)
{ int len1=strlen(num1);
int len2=strlen(num2);
if(len1>len2)
return 1;
else if(len1<len2)
return -1;
else
{
int i=0;
while(i<len1)
{
if(*(num1+i)>*(num2+i))
return 1;
else if(*(num1+i)<*(num2+i))
return -1;
else
i++;
}
}
return 0;
}
int Sub(char* num1,char* num2){
int len1=strlen(num1);len1--;
int len2=strlen(num2);len2--;
int jinwei=0;
for(;len2>=0;len2--,len1--){
int temp=*(num1+len1)-*(num2+len2)-jinwei;
if(temp>=0){
answer.push(temp);
jinwei=0;
}else{
answer.push(temp+10);
jinwei=1;
}
}for(;len1>=0;len1--){
int temp=*(num1+len1)-'0'-jinwei;
if(temp>=0){
answer.push(temp);
jinwei=0;
}else{
answer.push(temp+10);
jinwei=1;
}
}
int size=answer.size();
for(int i=0;i<size;i++){
printf("%d",answer.top());
answer.pop();
}
return 0;
}
输入两个参数和操作符并计算结果
#include "iostream"
#include <math.h>
using namespace std;
int main(){
char c;
float a,b,result(0);
int tag(1);
cin>>a>>b>>c;
switch(c){
case '+' :result = a+b; break;
case '-' :result = a-b;break;
case '*' :result = a*b;break;
case '/':
if(fabs(b)<1e-6){
cout<<"divide 0"<< endl;
tag=0;
break;
}
result = a/b;
cout<<result<<endl;
break;
default:
tag =0;
cout<<"invalid operation"<<endl;
break;
}
if(tag){
cout<<result<<endl;
}
return 0;
}
=========================================
第八章 作业1
输出类的X和Y值
#include <iostream>
using namespace std;
class Location{
private :
int X,Y;
public:
void init(int initX,int initY){
X = initX;
Y = initY;
}
int GetX(){
return X;
}
int GetY(){
return Y;
}
};
int main(){
Location A1;
A1.init(20,90);
Location &rA1=A1;
cout<<rA1.GetX()<<rA1.GetY();
return 0;
}
实现Clock类
#include<iostream>
#include"Clock.h"
using namespace std;
Clock::Clock(int h,int m,int s)
{
if(h<0||h>23) hour=0;
else hour=h;
if(m<0||m>59) minute=0;
else minute=m;
if(s<0||s>59) second=0;
else second=s;
}
void Clock::SetAlarm(int h,int m,int s)
{
if(h>23) Ahour=0;
else Ahour=h;
if(m>59) Aminute=0;
else Aminute=m;
if(s>59) Asecond=0;
else Asecond=s;
return ;
}
void Clock::run()
{
second+=1;
if(second>59)
{second=0;minute+=1;}
if(minute>59)
{minute=0;hour+=1;}
if(hour>23)
{hour=0;}
if((hour==Ahour)&&(minute==Aminute)&&(second==Asecond))
cout<<"Plink!plink!plink!..."<<endl;
return ;
}
实现User类
#include <iostream>
#include <string.h>
using namespace std;
class User{
private:
char name[1000][10];
char pass[1000][10];
int num;
public:
int login(char *name1,char * pass1){
for(int i=0;i<num;i++){
if(strcmp(name[i],name1)==0){
if(strcmp(pass[i],pass1)==0){
return i;
}else{
break;
}
}
}return -1;
}
User(char * name1,char * pass1){
num=0;
strcpy(name[num],name1);
strcpy(pass[num],pass1);
num++;
}
void AddUser(char * name1,char * pass1){
strcpy(name[num],name1);
strcpy(pass[num],pass1);
num++;
}
};
int main(){
char name[10],name1[10],pass[10],pass1[10];
cin>>name>>pass>>name1>>pass1;
User user("LiWei","liwei101");
user.AddUser(name,pass);
if (user.login(name1,pass1) >=0)
{
cout<<"Success Login!"<<endl;
}
else{
cout<<"Login failed!"<<endl;
}
return 0;
}
=========================================
第八章 作业2
实现三角形类
#include <iostream>
#include <math.h>
using namespace std;
class Ctriangle{
private:
double a,b,c;
public:
Ctriangle(double aa,double bb,double cc){
a=aa;b=bb;c=cc;
};
double GetPerimeter(){
double perimeter=a+b+c;
return perimeter;
};
double GetArea(){
double area;
double p=(a+b+c)/2;
area=sqrt(p*(p-a)*(p-b)*(p-c));
return area;
};
void display(){
cout<<"Ctriangle:a="<<a<<",b="<<b<<",c="<<c<<endl;
return;
};
};
int main(){
double a,b,c;
cin>>a>>b>>c;
Ctriangle T(a,b,c);
T.display();
cout<<"Perimeter:"<<T.GetPerimeter()<<endl;
cout<<"Area:"<<T.GetArea()<<endl;
return 0;
}
实现Point类
#include <iostream>
#include <math.h>
using namespace std;
class Point {
private:
double x,y;
public:
Point(double a,double b){
x=a;y=b;
}
double Distance(const Point c){
double ans=pow((x-c.x),2)+pow((y-c.y),2);
ans=sqrt(ans);
return ans;
}
};
int main(){
double a,b,c,d;
cin>>a>>b>>c>>d;
Point A(a,b),B(c,d);
cout<<A.Distance(B)<<endl;
return 0;
}
实现Date类
#include <iostream>
using namespace std;
class Date{
public:
Date(int y =1996,int m=1,int d=1);
int days(int year,int month);
void NewDay();
void display(){
cout<<year<<"-"<<month<<"-"<<day<<endl;
}
private:
int year;
int month;
int day;
};
Date::Date(int y,int m,int d){
if(m<1||m>12){
cout<<"Invalid month!"<<endl;
m=1;
}if(d<1||d>days(y,m)){
cout<<"Invalid day!"<<endl;
d=1;
}year=y;month=m;day=d;
}
void Date::NewDay(){
day++;
if(day>days(year,month)){
day=1;month++;
if(month==13){
month=1;year++;
}
}
}
int Date::days(int year,int month){
int ddays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
if((year%4==0&&year%100!=0)||year%400==0){
ddays[2]=29;
}else{
ddays[2]=28;
}return ddays[month];
}
int main(){
Date d(1993,13,32);
d.display();
return 0;
}
实现Student类
#include <iostream>
#include <string.h>
using namespace std;
class Student
{
private:
char name[20];
char id[20];
int grade1,grade2,grade3;
static int tgrade1,tgrade2,tgrade3;
public:
Student(char *name1,char *id,int g1,int g2,int g3);
void display();
static double average1(){
double ans=tgrade1/3.0;
return ans;
}
static double average2(){
double ans=tgrade2/3.0;
return ans;
}
static double average3(){
double ans=tgrade3/3.0;
return ans;
}
};
int Student::tgrade1=0,Student::tgrade2=0,Student::tgrade3=0;
Student::Student(char *name1,char *id1,int g1,int g2,int g3)
{
strcpy(name,name1);
strcpy(id,id1);
grade1=g1;tgrade1+=g1;
grade2=g2;tgrade2+=g2;
grade3=g3;tgrade3+=g3;
}
void Student::display(){
cout<<name<<" "<<id<<" "<<grade1<<" "<<grade2<<" "<<grade3<<endl;
}
int main(){
Student *stu1,*stu2,*stu3;
char name1[10],name2[10],name3[10];
char num1[12],num2[12],num3[12];
int grade1[3],grade2[3],grade3[3];
cin>>name1>>num1>>grade1[0]>>grade1[1]>>grade1[2];
cin>>name2>>num2>>grade2[0]>>grade2[1]>>grade2[2];
cin>>name3>>num3>>grade3[0]>>grade3[1]>>grade3[2];
stu1 = new Student(name1,num1,grade1[0],grade1[1],grade1[2]);
stu2 = new Student(name2,num2,grade2[0],grade2[1],grade2[2]);
stu3 = new Student(name3,num3,grade3[0],grade3[1],grade3[2]);
stu1->display();
stu2->display();
stu3->display();
cout<<"The average grade of course1:"<<stu2->average1()<<endl;
cout<<"The average grade of course2:"<<stu2->average2()<<endl;
cout<<"The average grade of course3:"<<stu2->average3()<<endl;
return 0;
}
完成String类
#include <string.h>
#include <iostream>
using namespace std;
class String{
private:
char *mystr;
int len;
public:
String(){
len =0;
mystr =NULL;
}
String(const char* p){
len = strlen(p);
mystr = new char[len+1];
strcpy(mystr,p);
}
String(String &s){
len = s.len;
if (len !=0)
{
mystr = new char[len+1];
strcpy(mystr,s.mystr);
}
}
~String(){
if (mystr != NULL)
{
delete []mystr;
mystr =NULL;
len = 0;
}
}
char *GetStr(){return mystr;}
void ShowStr(){cout<<mystr;}
bool IsSubstring(const char *str);
bool IsSubstring(const String &str);
int str2num();
void toUppercase();
};
bool String::IsSubstring(const String &str) {
int j=0;
for(int i=0;i<len;i++){
if(*(mystr+i)==*(str.mystr+j)){
if(j==str.len-1) return true;
else j++;
}else{
j=0;
}
}
return false;
}
bool String::IsSubstring(const char *str) {
int j=0;
int llen=strlen(str);
for(int i=0;i<len;i++){
if(*(mystr+i)==*(str+j)){
if(j==llen-1) return true;
else j++;
}else{
j=0;
}
}
return false;
}
int String::str2num() {
int ans=0;
for(int i=0;i<len;i++){
if(*(mystr+i)<='9'&&*(mystr+i)>='0'){
ans=ans*10+(*(mystr+i)-'0');
}
}
return ans;
}
void String::toUppercase() {
for(int i=0;i<len;i++){
if(*(mystr+i)<='z'&&*(mystr+i)>='a'){
*(mystr+i)=*(mystr+i)-'a'+'A';
}
}return;
}
int main(){
String a("abddddddbb");
if(a.IsSubstring("dddc")){
cout<<"yes";
}
return 0;
}
=========================================
第9章 作业1
继承Point类
#include <iostream>
using namespace std;
const float pi=3.14;
class Point{
public:
Point(float xx, float yy){
x = xx;
y =yy;
}
private:
float x;
float y;
};
class Rectangle :public Point{
public:
Rectangle(float xx,float yy,float w,float h);
float Area();
private:
float width;
float high;
};
class Circle:public Point{
public:
Circle(float xx,float yy,float r);
float Area();
private:
float radius;
};
Rectangle::Rectangle(float xx,float yy,float w,float h):Point(xx,yy)
{
width=w,high=h;
}
Circle::Circle(float xx,float yy,float r):Point(xx,yy)
{
radius=r;
}
float Rectangle::Area()
{
return width*high;
}
float Circle::Area()
{
return radius*radius*pi;
}
重载《运算符
#include <iostream>
using namespace std;
class Date{
public:
Date(int y=1996,int m=1,int d=1){
day = d;
month = m;
year = y;
if (m>12 || m<1)
{
month=1;
}
if (d>days(y,m))
{
cout<<"Invalid day!"<<endl;
day=1;
}
}
int days(int y,int m){
int ddays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
if((y%4==0&&y%100!=0)||y%400==0){ //闰年，，搞错了。。
ddays[2]=29;
}else{
ddays[2]=28;
}return ddays[m];
}
void display(){
cout<<year<<"-"<<month<<"-"<<day<<endl;
}
friend ostream& operator<<(ostream&out,Date &obj){
obj.display();
return out;
}
private:
int year;
int month;
int day;
};
int main(){
int y,m,d;
cin>>y>>m>>d;
Date dt(y,m,d);
cout<<dt;
return 0;
}
（多态）填空题04
#include <iostream>
using namespace std;
class Base{
public:
virtual void fun(){cout<<1<<endl;}
};
class Derived:public Base{
public:
void fun(){cout<<2<<endl;}
};
int main(){
Base *p = new Derived;
p->fun();
delete p;
return 0;
}
（多态）Set类
#include <iostream>
using namespace std;
class Set{
private:
int n;
int * pS; //集合元素
public:
Set(){n = 0;pS =NULL;}
Set(Set &s){
n = s.n;
if (n !=0)
{
pS= new int[n+1];
for (int i =1;i<=n;i++) //集合的下标从1开始，集合中不能有重复元素
pS[i] = s.pS[i];
}
}
~Set(){
if (pS)
{
delete []pS;
pS = NULL;
n =0;
}
}
void ShowElement()const{ //输出集合的元素
int temp = 0;
for(int i=1;i<n;i++) //这好像少了一个元素？ 从小到大排列
{
for(int j=i+1;j<n;j++)
{
if(pS[i] > pS[j])
{
temp = pS[i];
pS[i] = pS[j];
pS[j] = temp;
}
}
}
cout<<"{";
for(int i =1;i<n;i++)
cout <<pS[i]<<",";
if (IsEmpty())
cout<<"}"<<endl;
else cout<<pS[n]<<"}"<<endl; //输出的最后一个元素好像没有排序吧
}
bool IsEmpty()const{return n?false:true;} //判断集合是否为空
int size(){return n;}
bool IsElement(int e)const {
for (int i =1;i<=n;i++)
if (pS[i] ==e)
return true;
return false;
}
bool operator <=(const Set &s)const;//this <= s判断当前集合是否包于集合s
bool operator ==(const Set &s)const; //判断集合是否相等
Set & operator +=(int e); // 向集合中增减元素e
Set & operator -=(int e); //删除集合中的元素e
Set operator |(const Set &s)const; //集合并
Set operator &(const Set &s)const;//集合交
Set operator -(const Set &s)const; //集合差
};
//#include "CSet.h"
bool Set::operator<=(const Set &s) const { //看清楚题目，是当前集合是否属于另一个集合。。。jiuzhe?
if(s.n<n){
return false;
}
for(int i=1;i<=n;i++){
if(!s.IsElement(pS[i])){
return false;
}
}
return true;
}
bool Set::operator==(const Set &s) const {
if(s.n!=n){
return false;
}
for(int i=1;i<=s.n;i++){
if(!IsElement(s.pS[i])){
return false;
}
}
return true;
}
Set &Set::operator+=(int e) { //new分配的内存空间不够怎么办
if(IsEmpty()){
pS=new int [100]; //分配不够会错误
}
if(!IsElement(e)){
n++;
pS[n]=e;
}
return *this; //不知道对不对
}
Set &Set::operator-=(int e){
for (int i =1;i<=n;i++)
if (pS[i] ==e){
for(;i<n;i++){
pS[i]=pS[i+1];
}n--;
break;
}
return *this;
}
Set Set::operator|(const Set &s) const {
Set S;//用第二种构造函数直接赋值的时候报错了，应该是可以的
S.n=n;
S.pS = new int[n+s.n+1];
for(int i=1;i<=n;i++){
S.pS[i]=pS[i];
}
for (int i=1;i<=s.n;i++){
if(!S.IsElement(s.pS[i])){
S.pS[++S.n]=s.pS[i];
}
}
return S;
}
Set Set::operator&(const Set &s) const {
Set S;
S.n=0;
S.pS = new int[n+s.n+1];
for (int i=1;i<=s.n;i++){
if(IsElement(s.pS[i])){
S.pS[++S.n]=s.pS[i];
}
}
return S;
}
Set Set::operator-(const Set &s) const {
Set S;
S.n=0;
S.pS = new int[n+1];
for (int i=1;i<=n;i++){
if(!s.IsElement(pS[i])){
S.pS[++S.n]=pS[i];
}
}
return S;
}
int main(){
Set s1,s2;
s1+=1;s1+=3;s2+=2;s2+=1;
(s1-s2).ShowElement() ;//{1,2}
return 0;
}
=========================================
第九章 作业2
C++Test_Shape
#include<iostream>
#include"ShapeFactory.h"
using namespace std;
class Triangle :public ShapeFactory
{
private:
float a, b, c;
public:
Triangle(float a0, float b0, float c0)
{
a = a0; b = b0; c = c0;
}
float Circumstance()
{
return a + b + c;
}
};
class Quadrangle :public ShapeFactory
{
private:
float a, b, c, d;
public:
Quadrangle(float a0, float b0,float c0,float d0)
{
a = a0, b = b0, c = c0, d = d0;
}
float Circumstance()
{
return a + b + c+d;
}
};
class Circle :public ShapeFactory
{
private:
float r;
public:
Circle(float r0)
{
r = r0;
}
float Circumstance()
{
return r*2*3.14;
}
};
ShapeFactory* ShapeFactory::Create(float a, float b, float c)
{
ShapeFactory* p = new Triangle(a, b, c);
return p;
}
ShapeFactory* ShapeFactory::Create(float a, float b, float c, float d)
{
ShapeFactory* p = new Quadrangle(a, b, c, d);
return p;
}
ShapeFactory* ShapeFactory::Create(float r)
{
ShapeFactory* p = new Circle(r);
return p;
}
C++-简单计算器
#pragma once
class CNumberFactory
{
public:
virtual void Add(int number) {};
virtual void Sub(int number) {};
virtual int GetValue() {return -1;};
virtual void SetValue(int number) {};
CNumberFactory *Create();
};
// #include "CNumberFactory.h"
#include <iostream>
using namespace std;
class CNumber : public CNumberFactory{
private:
int num;
public:
void Add(int number){
num+=number;
}
void Sub(int number) {
num-=number;
}
int GetValue() {
return num;
}
void SetValue(int number) {
num=number;
}
};
CNumberFactory *CNumberFactory::Create()
{
CNumberFactory * p = new CNumber();
return new CNumber();
}
继承Building类
#include <cstring>
#include <iostream>
using namespace std;
class Building{
public:
Building(char *name,int floor,int room,int area){
strcpy(this->name,name);
this->floor = floor;
this->room = room;
this->area = area;
}
virtual void display(){
cout<<"Name:"<<name<<endl;
cout<<"Floor:"<<floor<<endl;
cout<<"Room:"<<room<<endl;
cout<<"Area:"<<area<<endl;
}
Building * createTeachBuilding(char *name,int floor,int room,int area,char *function);
Building * creatDormBuilding(char *name,int floor,int room,int area,int peoples);
protected:
char name[20];
int floor;
int room;
float area;
};
class TeachBuilding : public Building{
private:
char function[20];
public:
TeachBuilding(char *name,int floor,int room,int area,char *function):Building(name,floor,room,area){
strcpy(this->function,function);
}
void display(){
cout<<"Name:"<<name<<endl;
cout<<"Floor:"<<floor<<endl;
cout<<"Room:"<<room<<endl;
cout<<"Area:"<<area<<endl;
cout<<"Function:"<<function<<endl;
}
};
class DormBuilding : public Building{
private:
int peoples;
public:
DormBuilding(char *name,int floor,int room,int area,int people):Building(name,floor,room,area){
peoples = people;
}
void display(){
cout<<"Name:"<<name<<endl;
cout<<"Floor:"<<floor<<endl;
cout<<"Room:"<<room<<endl;
cout<<"Area:"<<area<<endl;
cout<<"Peoples:"<<peoples<<endl;
}
};
Building* Building::createTeachBuilding(char *name,int floor,int room,int area,char *function){
Building * p = new TeachBuilding(name,floor,room,area,function);
return p;
}
Building * Building::creatDormBuilding(char *name,int floor,int room,int area,int peoples){
Building * p = new DormBuilding(name,floor,room,area,peoples);
return p;
}
实现RoundTable类
#include <iostream>
#include <cstring>
using namespace std;
class Table{
private:
float high;
public:
Table(float h){
high=h;
}
float GetHigh(){
return high;
}
};
class Circle{
private:
float radius;
public:
Circle(float r){
radius=r;
}
float GetArea(){
return radius*3.14*radius;
}
};
class RoundTable: public Table,
public Circle{
private:
char color[20];
public:
RoundTable(float r,float h,char* c):Table(h),Circle(r){
strcpy(color,c);
}
char * GetColor(){
return color;
}
};
int main(){
float radius,high;
char color[20];
cin>>radius>>high>>color;
RoundTable RT(radius,high,color);
cout<<"Area:"<<RT.GetArea()<<endl;
cout<<"High:"<<RT.GetHigh()<<endl;
cout<<"Color:"<<RT.GetColor()<<endl;
return 0;
}
完成NewClock类
#include"Clock.h"
class NewClock :public Clock {
int hour, minute, second;
public:
NewClock(int h, int m, int s) : Clock(h, m, s) {
hour = getHour();
minute = getMinute();
second = getSecond();
}
void showTime() {
if (hour < 12)
{
cout << "Now:" << hour << ":" << minute << ":" << second << "AM" << endl;
}
else
{
cout << "Now:" << hour - 12 << ":" << minute << ":" << second << "PM" << endl;
}
}
void run() {
second = second + 1;
if (second>59)
{
second = 0;
minute += 1;
}
if (minute>59)
{
minute = 0;
hour += 1;
}
if (hour>23)
{
hour = 0;
}
}
};
Clock* Clock::createNewClock(int h, int m, int s) {
return new NewClock(h, m, s);
}
ClockWithDate类
#include <iostream>
using namespace std;
class Clock{
public:
Clock(int h,int m,int s){
hour =(h>23? 0:h);
minute = (m>59?0:m);
second = (s>59?0:s);
}
virtual void run(){
second = second+1;
if (second>59)
{
second =0;
minute+=1;
}
if (minute>59)
{
minute =0;
hour+=1;
}
if (hour>23)
{
hour =0;
}
}
virtual void showTime(){
cout<<"Now:"<<hour<<":"<<minute<<":"<<second<<endl;
}
int getHour(){return hour;}
int getMinute(){return minute;}
int getSecond(){return second;}
Clock * createClockWithDate(int h,int m,int s,int year,int month,int day);
protected:
int hour;
int minute;
int second;
};
class Date{
public:
Date(int y=1996,int m=1,int d=1){
day =d;
year =y;
month =m;
if (m>12||m<1)
{
m=1;
}
if(d>days(y,m)){
day = 1;
}
};
int days(int year,int month);
void NewDay();
void display(){
cout<<year<<"-"<<month<<"-"<<day<<endl;
}
protected:
int year;
int month;
int day;
};
/// #include "ClockAndDate.h"
int Date::days(int year, int month) {
int ddays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
if((year%4==0&&year%100!=0)||year%400==0){ //闰年，，搞错了。。
ddays[2]=29;
}else{
ddays[2]=28;
}
return ddays[month];
}
void Date::NewDay() {
day+=1;
if(day>days(year,month)){
day=1;
month++;
}if(month==13){
month=1;
year++;
}
}
class ClockWithDate : public Clock, public Date{
public:
ClockWithDate(int h,int m,int s,int y,int mm,int d):Clock(h,m,s),Date(y,mm,d){}
void run(){
Clock::run();
if(hour==0&&minute==0&&second==0){
NewDay();
}
}
void showTime(){
Clock::showTime();
display();
}
};
Clock* Clock::createClockWithDate(int h,int m,int s,int year,int month,int day){
return new ClockWithDate(h,m,s,year,month,day);
}
扩展String类
#include<stdio.h>
#include <iostream>
#include<cstring>
#include<string>
using namespace std;
class String{
protected:
char *mystr;
int len;
public:
String(const char *p){
len = strlen(p);
mystr = new char[len+1];
strcpy(mystr,p);
}
~String(){
if (mystr !=NULL)
{
delete []mystr;
mystr = NULL;
len = 0;
}
}
void showStr(){cout <<mystr;}
char * GetStr(){return mystr;}
virtual bool IsSubString(const char *str){
int i,j;
for (i =0;i<len;i++)
{
int k = i;
for (j =0;str[j] !='0\0';j++,k++)
{
if (str[j]!= mystr[k]) break;
}
if(str[j] =='\0') return true;
}
return false;
}
};
class EditString:public String{
public:
EditString(const char *p):String(p){}
int IsSubString(int start, const char *str);
void EditChar(char s, char d);
void EditSub(char * subs,char *subd);
void DeleteChar(char ch);
void DeleteSub(char * sub);
};
int EditString::IsSubString(int start, const char *str)
{
int i,j;
for(i=start;i<len;i++)
{
int k=i;
for(j=0;str[j];j++,k++)
{
if(str[j]!=mystr[k])break;
}
if(str[j]=='\0')return i;
}
return -1;
}
void EditString::EditChar(char s, char d)
{
for(int i=0;i<len;i++)
{
if(mystr[i]==s)
mystr[i]=d;
}
}
void EditString::EditSub(char * subs,char *subd)
{
int start=EditString::IsSubString(0,subs);
if(start<0)return;
else
{
int i=0,j=0;
int l1=strlen(subs);
int l2=strlen(subd);
char newstr[25];
for(;i<25;i++)
{
newstr[i]='\0';
}
while(start!=-1)
{
for(i=0;j<start;j++,i++)
{
newstr[i]=mystr[j];
}
for(int k=0;k<l2;k++,i++)
{
newstr[i]=subd[k];
}
start=EditString::IsSubString(start+l1,subs);
j=j+l1;
if(start==-1)
for(;j<len;j++,i++)
{
newstr[i]=mystr[j];
}
}
for(i=0;i<len;i++)
{
mystr[i]='\0';
}
strcpy(mystr,newstr);
// int L=strlen(mystr);
// for(int i=0;i<L;i++)
// cout<<mystr[i]<<endl;
return;
}
}
void EditString::DeleteChar(char ch)
{
for(int i=0;mystr[i];i++)
{
if(mystr[i]==ch)
{
for(int j=i;mystr[j];j++)
{
mystr[j]=mystr[j+1];
}
i--;
}
}
// for(int k=0;k<len;k++)
// cout<<mystr[k];
// cout<<endl;
}
void EditString::DeleteSub(char * sub)
{
int start=EditString::IsSubString(0,sub);
if(start<0)return;
else
{
int L=strlen(sub);
char newstr[25];
for(int i=0;i<25;i++)
{
newstr[i]='\0';
}
int i=0,j=0;
while(start>=0)
{
for(;j<start;i++,j++)
{
newstr[i]=mystr[j];
}
j=j+L;
start=EditString::IsSubString(j,sub);
if(start==-1)
{
for(;j<len;i++,j++)
newstr[i]=mystr[j];
}
}
for(i=0;mystr[i];i++)
{
mystr[i]='\0';
}
strcpy(mystr,newstr);
for(i=0;mystr[i];i++)
{
cout<<mystr[i];
}
cout<<endl;
}
}
完成Location类
#include "Location.h"
#include <string.h>
Location &Location::operator +(Location &offset)
{
this->x += offset.x;
this->y += offset.y;
return *this;
}
Location &Location::operator-(Location &offset)
{
this->x -= offset.x;
this->y -= offset.y;
return *this;
}
工具类Vehicle
#include"Vehicle.h"
class Car :public Vehicle
{
public:
Car() { cout << "Car constructor..." << endl; }
virtual void display()const
{
cout << "This is a car!"<<endl;
}
~Car() { cout << "Car destructor..." << endl; }
};
class Truck :public Vehicle
{
public:
Truck() { cout << "Truck constructor..." << endl; }
virtual void display()const
{
cout << "This is a truck!"<<endl;
}
~Truck() { cout << "Truck destructor..." << endl; }
};
class Boat :public Vehicle
{
public:
Boat() { cout << "Boat constructor..." << endl; }
virtual void display()const
{
cout << "This is a boat!"<<endl;
}
~Boat() { cout << "Boat destructor..." << endl; }
};
Vehicle* Vehicle::createCar() { return new Car(); }
Vehicle* Vehicle::createTruck() { return new Truck(); }
Vehicle* Vehicle::createBoat() { return new Boat(); }
抽象类Shape
#include <iostream>
using namespace std;
class Shape{
public:
Shape(){}
~Shape(){}
virtual double GetArea()=0;
virtual double GetPerimeter()=0;
static Shape* createRectangle(double length,double width);
static Shape* createCircle(double radius);
};
class Rectangle: public Shape{
private:
double length,width;
public:
double GetArea(){
return length*width;
}double GetPerimeter(){
return 2*(length+width);
}
Rectangle(double l,double w){
length=l;width=w;
}
};
class Circle: public Shape{
private:
double radius;
public:
double GetArea(){
return 3.14*radius*radius;
}double GetPerimeter(){
return 2*3.14*radius;
}Circle(double r){
radius=r;
}
};
Shape * Shape::createRectangle(double l,double w){return new Rectangle(l,w);}
Shape * Shape::createCircle(double r){return new Circle(r);}
=========================================
第十章 作业1
PS:让码图编译会儿~
get_sum
template<class T>
T get_sum(T* array, int n)
{
T sum = 0;
for (int i = 0; i < n; i++)
{
sum += array[i];
}
return sum;
}
node append
template <typename DataType>
class node
{
private:
DataType data;
node *next;
public:
node(){};
void set_value(DataType d)
{
data = d;
}
DataType get_value()
{
return data;
}
node *get_next()
{
return next;
}
void append(node *n)
{
next = n;
}
};
异常处理
class A{
public:
int err;
A(int index){
err=index;
}
};
class B{
public:
int err;
B(int divisor){
err=divisor;
}
};
命名空间ns1
int x=1,y=2;
namespace ns2{
char x='a',y='b';
int add_one(int a){
return a+1;
}
}
=========================================
第10章 作业2
get_max
template<class T>
T get_max(T* array, int n)
{
T max=array[0];
for (int i = 1; i < n; i++)
{
if(array[i]>max){
max=array[i];
}
}
return max;
}
get_min
template<class T>
T get_min(T* array, int n)
{
T min=array[0];
for (int i = 1; i < n; i++)
{
if(array[i]<min){
min=array[i];
}
}
return min;
}
node insert
template <typename DataType>
class node
{
private:
DataType data;
node *next;
public:
node(){};
void set_value(DataType d)
{
data = d;
}
DataType get_value()
{
return data;
}
node *get_next()
{
return next;
}
void insert(node *n)
{
n->next=this;
}
};
异常捕获
catch (int aa){
if(aa!=0){
cout << aa << " out of bound" << endl;
}else{
cout << "divide by "<< aa << endl;
}
}
命名空间nsA
int x=1,y=2;
namespace nsB{
char x='a',y='b';
int add_something(int a){
return a+2;
}
}
int add_something(int a){
return a+1;
}
浙公网安备 33010602011771号