C Program to Read Number from File and Write them in Odd and Even file

GTU PPS Practical - 60

A file named data contains series of integer numbers. Write a c program to read all numbers from file and then write all odd numbers into file named “odd” and write all even numbers into file named “even”. Display all the contents of these file on screen

				
					#include<stdio.h>

int main() {
  FILE * f1, * f2, * f3;
  int number, i, n = 10;

  printf("Contents of DATA file\n\n");

  f1 = fopen("DATA", "w");

  for (i = 0; i < n; i++) {
    scanf("%d", & number);
    if (number == -1) {
      break;
    }
    putw(number, f1);
  }
  fclose(f1);

  f1 = fopen("DATA", "r");
  f2 = fopen("ODD", "w");
  f3 = fopen("EVEN", "w");

  while ((number = getw(f1)) != EOF) {
    if (number % 2 == 0) {
      putw(number, f3);
    } else {
      putw(number, f2);
    }
  }

  fclose(f1);
  fclose(f2);
  fclose(f3);

  f2 = fopen("ODD", "r");
  f3 = fopen("EVEN", "r");

  printf("\n\n Contents of ODD file \n\n");

  while ((number = getw(f2)) != EOF) {
    printf("%d ", number);
  }

  printf("\n\nContents of EVEN file \n\n");

  while ((number = getw(f3)) != EOF) {
    printf("%d ", number);
  }

  fclose(f2);
  fclose(f3);
  return 0;
}