#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
//f means file
int main(){
    FILE * fp, *fout;
    fp = fopen("test.dat","rb");
    if(fp == NULL){
        printf("Damn!");
        exit(0);
    }
    char arr[100];
    int i=0;
    while(fgetc(fp)!=EOF){
        fseek(fp, -1, SEEK_CUR);
        arr[i] = fgetc(fp);
        i++;
    }
    arr[i] = '\0';
    //printf("%s",arr);
    /*
    for(int i = 0; i < strlen(arr) ; i++ ){
        scanf
    }*/
    // fput();
    fout = fopen("fout.dat","ab");
    for(int i = 0; i < strlen(arr) ; i++){
        fputc(arr[i], fout);
    }
    FILE *f1;
    f1 = fopen("fout.dat","rb");
    while(fgetc(f1)!=EOF){
        //putchar(arr[i]);
        fseek(f1,-1,1);
        putchar(fgetc(f1));
        Sleep(50);
    }

    fclose(fout);
    fclose(fp);

    return 0;
}