Convert string to double: how to use atof : String Convert « String « C / ANSI-C






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Convert string to double: how to use atof 



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

int main ()
{
  double n, m;
  double pi = 3.1415926535;
  char str[256];

  printf ( "Enter degrees: " );
  gets ( str );

  n = atof ( str );
  m = sin (n * pi / 180);

  printf ( "sine of %f degrees = %f\n" , n, m );

  return 0;
}








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