纯纯xin人，就俩个时间，减后得到另外一个时间，我这运行之后和我想象的，完全不一样，求解，
#include <stdio.h>
int main()
{ int xiaoshi1,fenzhong1;
int xiaoshi2,fenzhong2;
printf("俩个时间将近行减法计算");
scanf("%d %d",&xiaoshi1,&fenzhong1);
scanf("%d %d",&xiaoshi2,fenzhong2);
int yihao = xiaoshi1 * 60 + fenzhong1;
int erhao = xiaoshi2 * 60 + fenzhong2;
int sanhao = yihao - erhao;
printf("%d %d\n",sanhao/60,sanhao%60);
return 0;
}
