Question

How to convert double to bool in C

Answer 1

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

int main(void) 
{ 
    double d = 121.871;
	bool b = d != 0.0;
	
    fputs(b ? "true" : "false", stdout);
     
    return 0; 
} 
   
   
   
/*
run:
   
true
 
*/

 

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Answer 2

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

int main(void) 
{ 
    double d = 0.0;
	bool b = d != 0.0;
	
    fputs(b ? "true" : "false", stdout);
     
    return 0; 
} 
   
   
   
/*
run:
   
false
 
*/

 

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