C++ double is nan

/* isnan example */
#include <stdio.h>      /* printf */
#include <math.h>       /* isnan, sqrt */

int main()
{
  printf ("isnan(0.0)       : %d\n",isnan(0.0));
  printf ("isnan(1.0/0.0)   : %d\n",isnan(1.0/0.0));
  printf ("isnan(-1.0/0.0)  : %d\n",isnan(-1.0/0.0));
  printf ("isnan(sqrt(-1.0)): %d\n",isnan(sqrt(-1.0)));
  return 0;
}

Source: cplusplus.com

Similar codes

10 votes170 views3 answers
What is pi
C++
0 vote162 views1 answer
Vector of vectors of pairs c++
C++
0 vote165 views1 answer
C++ file handiling
C++
0 vote170 views1 answer
PUBG_APIKEY=<your-api-key> npm t
C++
20 votes186 views5 answers
Cin.getline
C++
0 vote158 views1 answer
Use regex replace in c++
C++
0 vote156 views1 answer
C code to c++ converter
C++
1 vote226 views2 answers
Lambda capture as const cpp
C++
25 votes178 views10 answers
Netflix
C++
-1 vote169 views1 answer
How to empty an array c++
C++