#include <unistd.h>
#include <stdio.h>
int main(void) {
    char str[] = "1234";
    int count = sizeof(str) - 1; // -1 to exclude the null terminator
    printf("%d", count); //output: 4
    write(1, str, count); //output: 1234 (printed earlier)
    return 0;
}