如下:

#include<stdio.h>

int main()

{

int a,b;

printf("请输入第一个时间a:");

scanf("%d",&a);

printf("请输入第二个时间b:");

scanf("%d",&b);

int hour1=a/100;//取小时

int minute1=a%100;//取分钟

int hour2=b/100;

int minute2=b%100;

int total1=hour1*60+minute1;

int total2=hour2*60+minute2;

int c=total2-total1;

printf("时间差为%d",c);

return 0;

}

运行结果：