c file handling writing and reading.c

#include < stdio.h >
  void main() {
    FILE * fp;
    char c;
    fp = fopen("BMSCE.txt", "w");
    
    c = getchar();
    
    while (c != EOF) {
      putc(c, fp);
      c = getchar();
    }

    fclose(fp);

    fp = fopen("BMSCE.txt", "r");
    
    c = getc(fp);
    
    while (c != EOF) {
      putchar(c);
      c = getc(fp);
    }

    fclose(fp);

    getch();

  }