C语言几种循环解释与举例

1、for循环

2、while循环

3、do-while循环

#include <stdio.h>
int main()
{
	//print the month which user input
	int days[]={31,28,31,30,31,30,31,30,31,30,31,30};
	int month;
	do
	{
		printf("Please input right figer of month:");
		scanf("%d",&month);
	}while(month<1||month>12);//处理不符合要求的输入数据
	//Processing input data that does not meet requirements
	printf("%d",days[month-1]);
	return 0; 
 }