#include <stdio.h>
#define PRECISION 0.1

float
squareRootRecursiveGuess(float x, float g)
{
    float cond, ans;
    g=((x/g) + g)/2;
    if((cond=x/g - g)>PRECISION || cond<-PRECISION)
        return squareRootRecursiveGuess(x, g);
    else
    {   
        printf("squareroot() says: ans=%f\n", ans=g);
        return ans;
    }
}

int
main(int argc, char** argv)
{
    float sq=squareRootRecursiveGuess(28, 2);
    printf("main() says: sq=%f\n", sq);
    return 0;
}