Question

How to find the perfect square elements in an array with C

Answer 1

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

bool is_perfect_square(double n) {
   double sq = sqrt(n);

   return ((sq - floor(sq)) == 0);
}


int main()
{
    int array[] = {7, 8, 9, 0, 36};
    int len = sizeof(array)/sizeof(array[0]);

    for (int i = 0; i < len; i++) {
        if (is_perfect_square(array[i]))
            printf("%d : Yes\n", array[i]);
        else
            printf("%d : No\n", array[i]);
    }

    return 0;
}




/*
run:

7 : No
8 : No
9 : Yes
0 : Yes
36 : Yes


*/

 

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