2021基础编程练习5-结构体扩展练习

2021基础编程练习5-结构体扩展练习

作业统计

http://oj.61coding.cn/problem.php?cid=1029&pid=0

#include<bits/stdc++.h>
using namespace std;
struct worktime{// 声明一个结构体类型 worktime 记录学生完成作业的时间
    int hr,minut,sec; // hr,minut,sec 分别代表时分秒
    worktime operator +(const worktime x){ // 对 + 进行重新定义
        worktime tmp;
          tmp.sec = (sec + x.sec) % 60;
          tmp.minut = (minut + x.minut + (sec + x.sec) / 60) % 60;
          tmp.hr = hr + x.hr + (minut + x.minut + (sec + x.sec) / 60) / 60;
          return tmp;
        }
};
int main(){
    worktime stu,sum;
    int n;
    cin >> n;
    sum.hr = sum.minut = sum.sec = 0;
    for(int i = 1; i <= n; i++){
          cin >> stu.hr >> stu.minut >> stu.sec;
          sum = sum + stu;// 两个结构体 sum 和 stu 通过重载 + 运算符进行加法运算
    }
    cout << sum.hr <<"hour "<< sum.minut <<"minute "<< sum.sec <<"second";
    return 0;
}

身高问题

http://oj.61coding.cn/problem.php?cid=1029&pid=1

#include<bits/stdc++.h>
using namespace std;
struct stu{
        string name;
        int heigh;
        int num;
        void input(){
                 cin >> name >> heigh >> num;
        }
        void output(){
                 cout << name <<" "<< heigh <<" "<< num << endl;
        }
 };
 stu a[110];
 int main(){
    int n;
    stu maxn;
    maxn.heigh = maxn.num = 0;
    cin >> n;
    for(int i = 1; i <= n; i++){
        a[i].input();
        if(a[i].heigh > maxn.heigh) maxn = a[i];
        else if(a[i].heigh == maxn.heigh && a[i].num < maxn.num) maxn = a[i];
    }
     maxn.output();
     return 0;
}

生日相同问题

http://oj.61coding.cn/problem.php?cid=1029&pid=2

#include<bits/stdc++.h>
using namespace std;
struct node{
    string name;
    int mon,day;
};
node a[311];
bool cmp(node x,node y){
    if (x.mon!=y.mon) return x.mon<y.mon;
        else if (x.day!=y.day) return x.day<y.day;
                else if (x.name.size()!=y.name.size()) return x.name.size()<y.name.size();
                        else return x.name<y.name; 
}
int main(){
    int n;
//  freopen("D:\\temp\\birthday.in","r",stdin);
//  freopen("D:\\temp\\birthday.out","w",stdout);
    cin>>n;
    for (int i=1;i<=n;i++){
        cin>>a[i].name>>a[i].mon>>a[i].day;
    }
    sort(a+1,a+n+1,cmp);
    int start=1,tot=1,flag=0;
    for (int i=2;i<=n;i++){
        if (a[i].mon==a[i-1].mon&&a[i].day==a[i-1].day) tot++;
            else {
                    if (tot>1){
                        flag=1;
                        cout<<a[start].mon<<" "<<a[start].day<<" ";
                        for (int j=start;j<i-1;j++) 
                            cout<<a[j].name<<" ";
                            cout<<a[i-1].name<<endl;
                    }
                    tot=1;
                    start=i;                
            }
    }
    if (tot>1){
        flag=1;
        cout<<a[start].mon<<" "<<a[start].day<<" ";
        for (int j=start;j<n;j++) 
            cout<<a[j].name<<" ";
        cout<<a[n].name<<endl;
    }
    if (flag==0) cout<<"None"<<endl;
 
    return 0;
}

集合运算

http://oj.61coding.cn/problem.php?cid=1029&pid=3

#include<bits/stdc++.h>
using namespace std;
 
struct tset{
    bool set[26];//集合 
 
    void input()//输入集合成员函数 
    {
        string s;
        cin >> s;
        memset(set,false,sizeof(set));
        for(int i = 0; i < s.size(); i++)
            set[s[i] - 'a'] = true;
    }
     
    void output()//输出集合成员函数
    {
        for(int i = 0; i < 26; i++)
            if(set[i]) cout << char(i + 'a');
        cout << endl;
    } 
     
    tset operator + (const tset x) const//重载+ 
    {
        tset tmp;
        for(int i = 0; i < 26; i++)
            tmp.set[i] = set[i] || x.set[i];
        return tmp;
    }
         
    tset operator - (const tset x) const//重载- 
    {
        tset tmp;
        for(int i = 0; i < 26; i++)
            tmp.set[i] = set[i] && (!x.set[i]);
        return tmp;
    }
         
    tset operator * (const tset x) const//重载* 
    {
        tset tmp;
        for(int i = 0; i < 26; i++)
            tmp.set[i] = set[i] && x.set[i];
        return tmp;
    }
};
 
int n;
tset a,b,c;
char op;
 
int main(){
//  freopen("set.in","r",stdin);
//  freopen("set.out","w",stdout);
    cin >> n;
    for(int i = 0; i < n; i++){
        a.input();
        cin >> op;
        b.input();
        if(op == '+') c = a + b;
        else if(op == '-') c = a - b;
             else if(op == '*') c = a * b;
        c.output();
    }
    return 0;
}