What's the error??

Question

#include <iostream.h>
#include <conio.h>

void main() {

int a,b;
clrscr();
for(a=1;a<=6;a++)
{
for(b=1;b<=i;b++)
cout<<b<<" ";
cout<<"\n";
}
getch();

}

Answer 1

And might be b<=a not i

Answer 2

SL means SoloLearn.

Answer 3

Run it on offline compiler (eg. Cxxdroid) not SL

Answer 4

What is SL