Contoh Program Perulangan C++

#include <iostream.h>

#include <conio.h>

void main()

{

clrscr();

int i,j,k,l;

cout<<"masukkan angka:"; cin >> i;

for(j= 1; j<= i; j++)

{

for(k=i; k>j; k--)

{

cout<< " ";

}

for (l=1; l<=j; l++)

{

If(l%2)

cout <<l<<"a";

else

cout<<l<<"b";

}

cout << " " << endl;

}

getch ();

}

outputnya :