fork download
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. // pattern1
  6. int n;
  7. cin>>n;
  8. int cnt =1;
  9. for(int i =1 ; i <= n; i++){
  10. for(int j =1; j <= i ; j++){
  11. cout << char(64+cnt);
  12. cnt++;
  13. }
  14. cout << endl;
  15. }
  16. return 0;
  17. }
Success #stdin #stdout 0.01s 5320KB
stdin
5
stdout
A
BC
DEF
GHIJ
KLMNO