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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