#include <bits/stdc++.h> using namespace std;

int main() { int a,b; char ch; bool x; cin>>a>>b>>ch>>x; if(x0) { for (int i = 1; i <= a; i++) { for (int j = 1; j <= b; j++) { if(i1 or ia or j1 or j==b) cout<<ch; else cout<<' '; } cout<<endl; } } else { for (int i = 1; i <= a; i++) { for (int j = 1; j <= b; j++) { cout<<ch; } cout<<endl; } } return 0; }

#include<bits/stdc++.h>
using namespace std;
int main(){
    int h,w,x;
    char c;
    cin>>h>>w>>c>>x;
    for(int i=1;i<=h;++i){
        for(int j=1;j<=w;++j){
            if(i==1 || i==h || j==1 || j==w){
                cout<<c;
            }else{
                if(x==1){
                    cout<<c;
                }else{
                    cout<<' ';
                }
            }
        }
        cout<<endl;
    }
    return 0;
}

😄 对了