squareroot c

/*program to find out square root of a number*/

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int cont=0;
    float square=0,squareroot=0,num=0,error=0.000001;
    do
    {
    printf("\nENTER THE NUMBER WHOSE SQUARE IS TO BE FOUND :");
    scanf("%f",&square);
    again:
        printf("ENTER THE INITIAL GUESS :");
        scanf("%f",&squareroot);
        if(squareroot>square)       //guess should be smaller than the entered number
        {
            printf("WRONG INPUT");
            goto again;
        }
    do
    {
        num=square/squareroot;      //calculating quotient
        if(((num<squareroot)&&(squareroot-num<error)) || ((num>squareroot)&&(num-squareroot<error)) || (squareroot==num))
        {
            printf("\nTHE SQUARE ROOT OF %f IS : %f",square,squareroot);
            break;
        }
        else
        {
            squareroot=(squareroot+num)/2;
        }
    }while(1);
    printf("\n\nDO YOU WANT TO ENTER ANOTHER NUMBER (1/0) : ");
    scanf("%d",&cont);
    }while(cont==1);
    return 0;
}
/*****************************OUTPUT***************************************

ENTER THE NUMBER WHOSE SQUARE IS TO BE FOUND :81
ENTER THE INITIAL GUESS :7

THE SQUARE ROOT OF 81.000000 IS : 9.000000

DO YOU WANT TO ENTER ANOTHER NUMBER (1/0) : 1

ENTER THE NUMBER WHOSE SQUARE IS TO BE FOUND :65
ENTER THE INITIAL GUESS :4

THE SQUARE ROOT OF 65.000000 IS : 8.062258

DO YOU WANT TO ENTER ANOTHER NUMBER (1/0) : 1

ENTER THE NUMBER WHOSE SQUARE IS TO BE FOUND :56
ENTER THE INITIAL GUESS :2

THE SQUARE ROOT OF 56.000000 IS : 7.483315

DO YOU WANT TO ENTER ANOTHER NUMBER (1/0) : 0

Process returned 0 (0x0)
Press any key to continue.

*/