PAT 1006 Sign In and Sign Out (25 分) 字符串的比较

#include <iostream>
#include <string.h>
using namespace std;

int main() {
    int m;
    cin>>m;
    char inmin[10]="24",outmax[10]="-1";
    char idtemp[20],in[10],out[10],unlock[20],lock[20];
    for(int i=0;i<m;i++){
        cin>>idtemp>>in>>out;
        if(strcmp(in,inmin)<0) {
            strcpy(inmin,in);
            strcpy(unlock,idtemp);
        }
        if(strcmp(out,outmax)>0){ 
            strcpy(outmax,out);
            strcpy(lock,idtemp);
        }
    }
    cout<<unlock<<" "<<lock;
    system ("pause");
    return 0;
}