replaceWhileWithFor.cpp

#include <iostream>

using namespace std;

int main() {

  for(int n=0;n<10;n++) { //sets n = 0, tells the loop to stop when n is no longer below 10, tell n to increment by 1 every time it loops.

        cout << "n is " << n << ": "; //prints out string "n is " followed by the value for n at this point

        for(int m=0; m<=n; m++) { //sets m = 0, tells the loop to stop when m>n, tells m to increment by +1 each cycle

            cout << m; //prints out the value for m

        }

        cout << endl; //moves to next line

    }

    return 0 ; //exits program

}  

OUTPUT:

n is 0: 0

n is 1: 01

n is 2: 012

n is 3: 0123

n is 4: 01234

n is 5: 012345

n is 6: 0123456

n is 7: 01234567

n is 8: 012345678

n is 9: 0123456789