// file: my first program
//
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

// my main program starts here
//
int main(int argc, char** argv) {

  char str[] = "27.2727";
  float sum;
  sscanf(str, "%f", &sum);
  fprintf(stdout, "sum = %f\n", sum);

  // exit gracefully
  //
  return 0;
}