#include <stdio.h>
int main()
{
  FILE *fp, *fp2;
  int CODE_NUMBER=0, counter, COD;
  char c;
  char opname[100], oname[100];
  printf("Enter openfile...\n");
  scanf("%s", opname);
  if ((fp = fopen(opname,"r")) == NULL){
    printf("NOT FOUND!\n");
    exit(1);
  }
  printf("Enter outputfile name...\n");
  scanf("%s",oname);
  printf("Enter CODENUMBER...\n");
  scanf("%d", &CODE_NUMBER);
  printf("Please wait...\n");
  fp2 = fopen(oname,"w");
  printf("NOW CODING...\n");
  while ((c=getc(fp)) != EOF){
    COD = c;
    putc(COD + CODE_NUMBER, fp2);
  }
  printf("CODING COMPLETED\n");
  fclose(fp);
  printf("CLOSE %s...\n", opname);
  fclose(fp2);
  printf("CLOSE %s...\n", oname);
  printf("COMPLETED!\n");
}