AC

我第一想到的是for,因为循环次数以经确定了，但我看完题目后发现可以配合if,于是写出了这些

#include <iostream>
using namespace std;
int main(){
    int n,m,xiao_feng=0,xiao_wu=0;
    cin>>n>>m;
    for(int i=1;i<=n;i++)xiao_wu++;
    
    for(int i=1;i<=m;i++)xiao_feng++;
    
    if(xiao_feng>xiao_wu){        
        xiao_feng-=xiao_wu;
        for(int i=1;i<=xiao_wu;i++){
            cout << "#*";
        }
        for(int i=1;i<=xiao_feng;i++){
            cout << "*";
        }
        }else if(xiao_feng<xiao_wu){
        xiao_wu-=xiao_feng;
        for(int i=1;i<=xiao_feng;i++){
            cout << "#*";
        }
        for(int i=1;i<=xiao_wu;i++){
            cout << "#";
    }
        
    }else{
        for(int i=1;i<=xiao_wu;i++){
            cout << "#*";
        }
    }
    return 0;
}