g4.c - master - Nik135/Homeworks

g4.c

35 строк751 B

Nik135

hw10

21 фев 2026, 21:08

21 фев 2026, 21:08abf0fc4

#include <stdio.h>
#include <string.h>

int main()
{
    FILE *fin = fopen("input.txt", "r");
    FILE *fout = fopen("output.txt", "w");
    char word1[101], word2[101];
    int count1[26] = {0}, count2[26] = {0};

    if (!fin || !fout) return 1;

    fscanf(fin, "%100s %100s", word1, word2);
    fclose(fin);

    for (int i = 0; word1[i]; i++)
        count1[word1[i] - 'a']++;
    for (int i = 0; word2[i]; i++)
        count2[word2[i] - 'a']++;

    int first = 1;
    for (int i = 0; i < 26; i++)
    {
        if (count1[i] == 1 && count2[i] == 1)
        {
            if (!first) fprintf(fout, " ");
            fprintf(fout, "%c", 'a' + i);
            first = 0;
        }
    }

    fprintf(fout, "\n");
    fclose(fout);
    return 0;
}