#include <stdio.h>
#define N 80

using namespace std;

int main () {
    FILE *filec;
    FILE *filer;
    int size;
    filec = fopen("f.txt", "r");
    fseek (filec, 0, SEEK_END);
    size = ftell (filec);
    fclose(filec);
    char arr[size];
    filer = fopen("f.txt", "r");
    while (fgets (arr, size, filer) != NULL)
        fclose(filer);
    printf("%s", arr);
}