Day4

 

 

 

 3.代码示例

#include<iostream>
using namespace std;
int main(){
    int a1,a2,a3,a4,s,m;
    for(a1=0;a1<=9;a1++){
        for(a3=0;a3<=9;a3++){
            if(a1!=a3){
                s=a1*1000+a1*100+a3*10+a3;
                //cout<<s<<"  ";
                for(m=31;m<99;m++){
                
                    if(m*m==s){
                        cout<<"车牌号为："<<s;
                    }
                    
                    
            }
            }
        }
    }
    return 0;
} 

4.输出截图