极简代码，易懂！！！

#include<bits/stdc++.h>
using namespace std;
int main(){
char a;
cin>>a;
for(int i=1;i<=3;i++){
for(int j=1;j<=5;j++){
if(i1&&j1){
cout<<" ";
}else if(i1&&j2){
cout<<" ";
}else if(i1&&j4){
cout<<" ";
}else if(i1&&j5){
cout<<" ";
}else if(i2&&j1){
cout<<" ";
}else if(i2&&j5){
cout<<" ";
}else{
cout<<a;
}
}
cout<<endl;
}
return 0;
}