cpp

Question

to make this shape
*
**
***
****
*****

we write this code

#include<iostream>
using namespace std;
int main(){
int i;
for(int row =1; row<=5; row++){

for (int col=1; col<=row; col++){

cout<<"*";}
cout<<"\n";}
return 0;
}

so may anyone explain to me why we wrote
col<=row in the inner for .

Answer 1

row = 1 *
row = 2 **
row = 3 ***
row = 4 ****
row = 5 *****

You can see that the amount of * is followed by row. And we make a new line(\n) when row increases.