I dont know if I use the array with size 131072 I get result "access violation" if I use the size 131073 I get the result "stack overflow" so how I get the right way to resolve the problem, sorry for my bad english;

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

int main()
{
    int index = -1;
    double stack[131073];
    while(scanf("%lf", &stack[++index]) != EOF);
    for(; top > 0;printf("%.4lf\n", sqrt(stack[--index])));
    return 0;
}

#include <stdio.h>
#include <math.h>
double stack[131073];
int main()
{
    int index = -1;
    while(scanf("%lf", &stack[++index]) != EOF);
    for(; index > 0;printf("%.4lf\n", sqrt(stack[--index])));
    return 0;
}

Did you resolve the problem?