[드림핵] repeat service

// gcc -o main main.c

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>

void initialize() {
    setvbuf(stdin, NULL, _IONBF, 0);
    setvbuf(stdout, NULL, _IONBF, 0);
}

void win() {
    system("/bin/sh");
}

int main() {
    initialize();

    char inp[80] = {0};
    char buf[1000] = {0};

    puts("Welcome to the Repeat Service!");
    puts("Please put your string and length.");

    while (1) {
        printf("Pattern: ");
        int len = read(STDIN_FILENO, inp, 80);
        if (len == 0)
            break;
        if (inp[len - 1] == '\n') {
            inp[len - 1] = 0;
            len--;
        }

        int target_len = 0;
        printf("Target length: ");
        scanf("%d", &target_len);

        if (target_len > 1000) {
            puts("Too long :(");
            break;
        }

        int count = 0;
        while (count < target_len) {
            memcpy(buf + count, inp, len);
            count += len;
        }

        printf("%s\n", buf);
    }
    return 0;
}