C_在switch
源码：
# include <stdlib.h>
# include <stdio.h>
int main()
{
int month;
int day;
printf("please input the month number: ");
scanf("%d", &month);
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: day=31; // 有31天的月份情况
break;
case 4:
case 6:
case 9:
case 11: day=30; // 有30天的月份的情况
break;
case 2: day=28; // 非闰年的2月有28天
break;
default: exit(0);
}
printf("1999.%d has %d days.\n", month, day);
return 0;
}
其中，若能按输入年份分为闰年和非闰年输出每月天数，可能更好。（待解决）
相关文档：
源码:
# include <stdio.h>
int main()
{
/* 定义变量并赋初值 */
int a = 5;
char c = 'a'; // 'a'的ASC码的值为97
......
源码:
# include <stdio.h>
int main()
{
int i, j, k;
int m, n, p;
i = 8;
j = 10;
k = 12;
/* 自增在操作数之前 */
......
源码:
# include <stdio.h>
int main()
{
int x, y, num1, num2, temp;
printf("请输入两个正整数：\n");
scanf("%d %d", &num1, &num2);
if(num1 < num2)
......
