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How to check if a number is perfect square in C

1 Answer

0 votes
#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 argc, char **argv) 
{ 
    if (is_perfect_square(36)) 
        printf("Yes\n"); 
    else
        printf("No\n"); 
		
	if (is_perfect_square(20)) 
        printf("Yes\n"); 
    else
        printf("No\n"); 
        
    return 0; 
}  
 
 
  
/*
run:
    
Yes
No
    
*/

 




answered May 6, 2019 by avibootz
edited May 7, 2019 by avibootz
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