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


int main(){

double num1,num2,num3,num4;


scanf("%lf %lf %lf %lf",&num1,&num2,&num3,&num4);

printf("%.4lf\n%.4lf\n%.4lf\n%.4lf",sqrt(num4),sqrt(num3),sqrt(num2),sqrt(num1));

return 0;
}

why is it  wrong?

I think it's not necessarily exactly 4 numbers.

Judging from my result, I think there are many numbers in the test case.

So you need a list or something to store the integers first then print the sqrt in reversed order.

(also, the integer is very big, so int type might not work)