#include <stdio.h>
int main()
{
  FILE *fp, *fp2;
  char c, opname[100], wfname[100];
  int codekey=0;
  printf("enter INPUT FILE...\n");
  scanf("%s", opname);
  if ((fp = fopen(opname,"r")) == NULL){
    printf("//%s//File not found...\n", opname);
    exit(1);
  }
  printf("enter OUTPUT FILE...\n");
  scanf("%s", wfname);
  printf("enter CODE KEY...\n");
  scanf("%d", &codekey);
  printf("please wait...\n");
  fp2 = fopen(wfname,"w");
  printf("OPEN--%s--...\nENCODE START...\n", wfname); 
  while ((c=getc(fp)) != EOF){
    putc(c+codekey,fp2);
    }
  printf("ENCODING FINISHED!\n");
  fclose(fp);
  printf("CLOSE --%s--...\n", opname);
  fclose(fp2);
  printf("CLOSE --%s--...\n", wfname);
  printf("COMPLETED!\n");
}