#include<bits/stdc++.h> using namespace std; int main(){ char a,b; cin>>a; cout<<" "<<a<<" "<<endl; cout<<" "<<a<<a<<a<<" "<<endl; cout<<a<<a<<a<<a<<a<<endl; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ for(int j=1;j<=3;j++;){ for(int x=j-1;x>0;x++){ cout<<' '; } for(int i=1;i=2*j-1;i++){ cout<<"A"; } cout<<endl; } }

好了，你自己写吧。

题解1 题解2

#include<iostream> using namespace std; int main() { char a; cin>>a; cout<<" "<<" "<<a<<endl; cout<<" "<<a<<a<<a<<endl; cout<<a<<a<<a<<a<<a<<endl; return 0; }

#include <iostream> using namespace std; int main() { char ch; cin >> ch; }

#include <iostream> using namespace std; int main(){ char A; cin >> A; cout << " " << A << endl; cout << " " << A << A << A << endl; cout << A << A << A << A << A; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; cout<<" "<<a<<endl; cout<<" "<<a<<a<<a<<endl; cout<<a<<a<<a<<a<<a; return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int n=3; char a; cin>>a; for(int i=1;i<=n;i++){ for(int j=1;j<=n-i;j++){ cout << " "; } for(int k=1;k<=2*i-1;k++){ cout << a ; } cout << endl; } return 0; }

#include <iostream> #include <iomanip> using namespace std; int main(){ char c = getchar(); printf(" %c\n %c%c%c\n%c%c%c%c%c\n", c,c,c,c,c,c,c,c,c); return 0; }