strcmp返回错误的值

有人可以解释一下为什么strcmp即使密码正确/错误也返回相同的值吗？我在include部分的下面定义了有效的密码，并在程序末尾输入了一个密码进行检查。

这是我的代码：

#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <termios.h>

#define TIME 10
#define MAXPASSWORD 12
#define PASSWORD "pass123"

void sigalrm_handler() {
    printf("\nERR: Time is up...\n");
}

int getch() {
    struct termios oldtc, newtc;
    int ch;
    tcgetattr(STDIN_FILENO, &oldtc);
    newtc = oldtc;
    newtc.c_lflag &= ~(ICANON | ECHO);
    tcsetattr(STDIN_FILENO, TCSANOW, &newtc);
    ch=getchar();
    tcsetattr(STDIN_FILENO, TCSANOW, &oldtc);
    return ch;
}

int main(int argc, char * argv[]) {
    char password[MAXPASSWORD] = {0};
    printf("Enter correct password. You have %d seconds: ", TIME);
    signal(SIGALRM, sigalrm_handler);
    alarm(TIME);
    fflush(stdout);

    for(int i=0; i<MAXPASSWORD; i++)
    {
      password[i] = getch();
      if (password[i] == '\n')
        break;
      printf("*");
    }

    if (strcmp(password, PASSWORD) == 0) {
        printf("\nValid password\n");
    } else {
        printf("\nInvalid password\n");
    }
}