Pb3

#include <bits/stdc++.h>

using namespace std;

bool voc(char c)
{
    if(c == 'a' or c == 'e' or c == 'i' or c == 'o' or c == 'u')
        return 1;
    return 0;
}

int main()
{
    FILE *in;
    in = fopen("pb3.txt", "rt");

    if (in == NULL)
    {
        perror("NU");
        return -1;
    }

    char s[101] = {};
    char rez[101][101] = {};
    int k = 0;
    while(fgets(s, 101, in))
    {
            strcpy(rez[k++], s);
    }

    fclose(in);

    FILE *out;
    out = fopen("pb3out.txt", "w+");
    if (out == NULL)
    {
        perror("NU");
        return -1;
    }

    for(int i=k-1; i>=0; i--)
        {
            fprintf(out, "%s", rez[i]);
            //fprintf(out, "\n");
        }

    fclose(out);
    return 0;
}