输入一组数据求其最大值

#include <iostream>
using namespace std;
int main(){
    int num,max,num1;
    cin>>num1;
    max=num1;
    while(1){
        cin>>num;
        if(num==num1){
            break;
        }
        if(num>max){
            max=num;
        }
    }
    cout<<"max="<<max;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int n=0,m=0,max;
    cin>>n>>m;
    max=n;
    if(n<m)
        max = m;
    cin>>m;
    while(m != n)
    {
          if(m>max)
              max = m;
          cin>>m;
    }
    cout<<"max="<<m<<endl;
    return 0;
}