How to square a number in c++ program?

Answer 1

The syntax for C would be :

#include<stdio.h>
int main()
{
int a=9;
int b=a*a;
printf("%d",b);
return 0;
}

Answer 2

#include<math.h>
a=2;
sq=a*a;
cout<<sq;

or

sq=sqr(a)
cout<<sq;