AC代码

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,d; char c; cin>>a>>b>>c>>d; for(int i=0;i<a;i++){ for(int j=0;j<b;j++){ if(d1||j0||jb-1|| i0||i==a-1) cout<<c; else cout<<" "; } cout<<endl; } }

#include<iostream> using namespace std; int main(){ int a,b,d; char c; cin>>a>>b>>c>>d; }