strtod : strtod « stdlib.h « C Tutorial

1. C Tutorial
2. stdlib.h
3. strtod

If input is "100.00 Pliers", the value 100.00 will be returned.

#include <stdlib.h>
  #include <ctype.h>
  #include <stdio.h>

  int main(void)
  {
    char *end, *start = "100.00 AAA 200.00 BBB";

    end = start;
    while(*start) {
      printf("%f, ", strtod(start, &end));
      printf("Remainder: %s\n" ,end);
      start = end;
      /* move past the non-digits */
      while(!isdigit(*start) && *start) start++;
    }

    return 0;
  }

100.000000, Remainder:  AAA 200.00 BBB
200.000000, Remainder:  BBB