不用if很正常啊
```cpp
#include<iostream>
using namespace std;
int a,b,c,d,e,f;
int main()
{
cin>>a>>b>>c>>d;
e=c-a;
f=d-b;
if (f<0)
{
e=e-1;
f=d+60-b;
}
cout<<e<<" "<<f<<endl;
return 0;
}
```
by cloud1 @ 2017-10-28 11:28:38
老兄，你这程序明明用if了
by 6QWQ6 @ 2017-11-07 20:30:07
@[碧柠](/space/show?uid=65631)
by 6QWQ6 @ 2017-11-07 20:30:19
owo抱歉
by cloud1 @ 2017-11-10 19:38:44
@ wqy050503
by cloud1 @ 2017-11-10 19:40:09
```cpp
#include <iostream>
using namespace std;
int a,b,d,f,g;
int main()
{
cin >> a >> b >> d >> f;
g=d*60+f-a*60-b;
cout << g/60 << " " <<g%60 << endl;
return 0;
} 0.
```
by cloud1 @ 2017-11-10 19:45:52
然而我表十分抱歉
by cloud1 @ 2017-11-10 19:47:58
@[wqy050503](/space/show?uid=36372)
by cloud1 @ 2017-11-10 19:48:31
呵呵
by 6QWQ6 @ 2017-11-12 21:44:30