To find squareroot of number

Sqrt.cpp

#include <stdio.h>
int sqr(int x)
{
	int i=1;
	int j;
	while(j<=x)
	{
		j=i*i;
		i++;	
	}
	return i-2;
}
void main()
{
	printf("enter number to chaeck squreroot");
	int x;
	scanf("%d",&x);
   printf("\n%d is squareroot of %d",sqr(x),x);
	
}

To find squareroot of number

in line 15: check**