/* 
* Code example for CP264 Data Structures II
* read formated data from file using fopen(), fclose() and fscanf()
* HBF 
*/
#include <stdio.h>

int main (){
  char str[80];
  float f;
  FILE *fp;
  
  fp = fopen("test.txt","w+");
  if (fp == NULL) {
	perror("Error opening file");
	return 0;
  }
  
  fprintf(fp, "%f %s", 3.14, "PI");  // write to file 
  rewind(fp);                        // move the pointer to the beginning
  
// fscanf(fp, "%f", &f);   // formatted read from file
// fscanf(fp, "%s", str);  // read a string, formatted read from file
  fscanf(fp,"%f %s", &f, str); // read float string, 
  // fscanf(fp,"%s %f", str, f); is normally not work, except for fixed length string
  
  fclose(fp);
  printf("%f and %s  are added.\n", f, str);
  return 0;
}