# 实验四

#include <stdio.h>
#define N 4
int main()
{
int a[N] = {2, 0, 2, 2};
char b[N] = {'2', '0', '2', '2'};
int i;
printf("sizeof(int) = %d\n", sizeof(int));
printf("sizeof(char) = %d\n", sizeof(char));
printf("\n");

for (i = 0; i < N; ++i)
printf("%p: %d\n", &a[i], a[i]);
printf("\n");

for (i = 0; i < N; ++i)
printf("%p: %c\n", &b[i], b[i]);
printf("\n");

printf("a = %p\n", a);
printf("b = %p\n", b);
return 0;
}

#include <stdio.h>
#define N 2
#define M 3
int main()
{
int a[N][M] = {{1, 2, 3}, {4, 5, 6}};
char b[N][M] = {{'1', '2', '3'}, {'4', '5', '6'}};
int i, j;

for (i = 0; i < N; ++i)
for (j = 0; j < M; ++j)
printf("%p: %d\n", &a[i][j], a[i][j]);

printf("\n");

for (i = 0; i < N; ++i)
for (j = 0; j < M; ++j)
printf("%p: %c\n", &b[i][j], b[i][j]);

return 0;
}

#include <stdio.h>
#define N 5
void input(int x[], int n);
void output(int x[], int n);
double average(int x[], int n);
void sort(int x[], int n);
int main()
{
int scores[N];
double ave;
printf("录入%d个分数:\n", N);
input(scores, N);
printf("\n输出课程分数: \n");
output(scores, N);
printf("\n课程分数处理: 计算均分、排序...\n");
ave = average(scores, N);
sort(scores, N);
printf("\n输出课程均分: %.2f\n", ave);
printf("\n输出课程分数(高->低):\n");
output(scores, N);
return 0;
}
void input(int x[],int n)
{
int i;
for(i=0;i<n;i++)
scanf("%d",&x[i]);
}
void output(int x[],int n)
{
int i;
for(i=0;i<n;i++)
printf("%d ",x[i]);
printf("\n");
}
double average(int x[],int n)
{
double s=0;
int i;
for(i=0;i<n;i++)
s+=x[i];

return (s/n);
}
void sort(int x[],int n)
{
int i,j,t;
for(j=0;j<n-1;j++)
{
for(i=0;i<n-1-j;i++)
{
if(x[i]>x[i+1])
{
t=x[i];
x[i]=x[i+1];
x[i+1]=t;
}
}

}
for(i=0;i<=n/2;i++)
{
t=x[i];
x[i]=x[n-i-1];
x[n-i-1]=t;
}
}

#include<stdio.h>

int days_of_year(int year,int month,int day);

int main()
{
int year,month,day;int days;

while(scanf("%d%d%d",&year,&month,&day)!=EOF)
{
days=days_of_year(year,month,day);
printf("%4d-%02d-%02d是这一年的第%d天.\n\n",year,month,day,days);
}

return 0;
}

int days_of_year(int year,int month,int day)
{
int i,days=0;
int mon[12]={0,31,28,31,30,31,30,31,31,30,31,30};
for(i=1;i<month;i++)
{
if((year%4==0)&&(year%100!=0)||year%400==0)
{
mon[2]++;
}
days+=mon[i];
}
days+=day;
return days;
}

#include<stdio.h>

void dec2n(int x,int n);

int main()
{
int x;

printf("输入一个十进制整数:");
scanf("%d",&x);

dec2n(x,2);
printf("\n");
dec2n(x,8);
printf("\n");
dec2n(x,16);
printf("\n");

return 0;
}

void dec2n(int x,int n)
{
int a,b;char m[16]={"0123456789ABCDEF"};
a=x/n;
b=x%n;
if(a==0)
{
printf("%c",m[b]);
}
else
{
dec2n(a,n);
printf("%c",m[b]);
}
}

#include<stdio.h>
int main()

{
int i, j, m, n;
printf(" Enter n: ");
while(scanf("%d",&n)!= EOF)
{
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
m=i>j?j:i;
printf("%3d",m);
}
printf("\n");
}
printf(" Enter n: ");
}
return 0;
}

#include <stdio.h>
#define N 80
int main()
{
char views1[N] = "hey, c, i hate u.";
char views2[N] = "hey, c, i love u.";
int a;
char b;
printf("original views:\n%s\n%s\n\n",views1,views2);
for(a=0;views1[a]!='\0';a++)
{
b=views1[a];
views1[a] = views2[a];
views2[a] = b;
}
printf("swapping...\n\n%s\n%s",views1,views2);
return 0;
}

#include <stdio.h>
#include <string.h>

#define N 5
#define M 20

void bubble_sort(char str[][M], int n); // 函数声明

int main()
{
char name[][M] = {"Bob", "Bill", "Joseph", "Taylor", "George"};
int i;

printf("输出初始名单:\n");
for (i = 0; i < N; i++)
printf("%s\n", name[i]);

printf("\n排序中...\n");
bubble_sort(name, N); // 函数调用

printf("\n按字典序输出名单:\n");
for (i = 0; i < N; i++)
printf("%s\n", name[i]);

return 0;
}

void bubble_sort(char str[][M], int n)
{
int i, j;
char t[M];
for (i = 0; i < n - 1; i++)
{
for (j = 0; j < n - i - 1; j++)
{
if (strcmp(str[j], str[j + 1])>0)
{
strcpy(t, str[j]);
strcpy(str[j], str[j + 1]);
strcpy(str[j + 1], t);
}
}
}
}

posted @ 2022-05-09 23:28  格桑尼玛  阅读(8)  评论(3编辑  收藏  举报