Răspuns:
using namespace std;
#include <iostream>
#include <stdlib.h>
#include <math.h>
int main()
{
int i,j,c,n;
c=65;//codul ascii al caracterului "A"
cout<<"n";
cin>>n;
for(i=1;i<=n;i++){
for(j=1;j<=i;j++)
cout<<(char)c<<" "; //(char)c converteste codul ascii in caracter
c=c+1;
cout<<"\n";
}
return 0;
}
