pvjc25/a1/program.c

#include <stdio.h>

int main() {
    int c = 0;
    int pocet_riadkov = 0;

    while (1) {
        c = getchar();

        if (c == EOF) {
            break;
        }

        if (c >= 'a' && c <= 'z') {
            c = c - 'a' + 'A';
        } else if (c >= 'A' && c <= 'Z') {
            c = c - 'A' + 'a';
        }

        if (c == '\n') {
            pocet_riadkov++;
        }

        putchar(c);
    }

    printf("\nLines count: %d\n", pocet_riadkov);

    return 0;
}