#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include <stdlib.h>


int main() {

    FILE* fptr;

    char letter1 = 'a';
    char letter2 = 'a';

    for (int i = 0; i < 26; i++) {
        char filename[7];

        sprintf(filename, "%c%c.dat", letter1, letter2);

        fptr = fopen(filename, "w");

        for (int j = 1; j <= 10; j++) {
            fprintf(fptr, "Record N %d in file %c%c.dat\n", j, letter1, letter2);
        }

        letter1++;
        letter2++;
    }

    return 0;
}