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

0 vote170 views1 answer
271533778232847
C++
0 vote220 views2 answers
Dynamic memory allocation c++
C++
0 vote165 views1 answer
Vector of shared_ptr c++ push_back
C++
0 vote160 views1 answer
C++ remove all elements equal to
C++
0 vote174 views1 answer
What is require to run min max function on linux in cpp
C++
0 vote164 views1 answer
How to display score using SDL in c++
C++
1 vote202 views2 answers
Read file into vector
C++
0 vote159 views1 answer
Setting a number of decimals on a float on C++
C++
0 vote181 views1 answer
C++ rainbow text
C++
2 votes155 views6 answers
Loop in c++
C++