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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