#include <iostream>
#include <stdio.h>
#include <math.h>

using namespace std;

int main(void){
    double a[300];
    unsigned long int n;
    short int i=0, k=0;
    while (cin>>n){
        k++;
        a[k]=sqrt((double)n);
    }
    for (i=k; i>0; i--){
        printf("\n%.4f",a[i]);
    }
    return(0);
}

I don't know where the error =(

Edited by author 20.05.2012 23:10