北邮新OJ89

http://code.bupt.edu.cn/problem/p/89/

#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#include<string.h>
#include<sstream>
using namespace std;
int M(int n1,int n2)
{
    if(n1<=n2)
        return n2-n1;
    else
        return 24*60-(n1-n2);
}
int CC(char s[3])
{
    int sum=0;
    for(int i=0;i<strlen(s);i++)
        sum=sum*10+(s[i]-'0');
    return sum;
}
int C(char s[6])
{
    int index=0;
    for(int i=0;i<strlen(s)&&index==0;i++)
        if(s[i]==':')
            index=i;
    char s1[3];
    char s2[3];
    for(int i=0;i<=2;i++)
    {
        s1[i]='\0';
        s2[i]='\0';
    }
    for(int i=0;i<index;i++)
        s1[i]=s[i];
    for(int i=index+1;i<strlen(s);i++)
        s2[i-index-1]=s[i];
    //puts(s1);
    //puts(s2);
    int n1=CC(s1);
    int n2=CC(s2);
    //cout<<n1<<" "<<n2<<endl;
    return n1*60+n2;
}
int main()
{
    int m;
    while(scanf("%d",&m)!=EOF)
    {
        getchar();
        for(int k=1;k<=m;k++)
        {
           char s1[6];
           char s2[6];
           scanf("%s",s1);
           scanf("%s",s2);
           //puts(s1);
           //puts(s2);
           int num1=C(s1);
           int num2=C(s2);
           printf("%d\n",M(num1,num2));
        }
    }
    return 0;
}