Convert string to double-precision floating-point value: how to use strtod : String Convert « String « C / ANSI-C

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Convert string to double-precision floating-point value: how to use strtod







#include <stdio.h>

#include <stdlib.h>



int main ()

{

  char str[256];

  char *p;

  double dbl;

  

  printf ("Enter a floating-point value: ");

  

  gets (str);

  

  dbl = strtod (str, &p);

  

  printf ("Value entered: %lf. Its square: %lf\n", dbl, dbl * dbl);

  

  return 0;

}

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