Say Hello To Linux

say_hello.c

/*************************************************************************
    > File Name: say_hello_1.c
    > Author: VOID_133
    > ###################
    > Mail: ###################
    > Created Time: Sun 25 Sep 2016 12:33:38 AM HKT
 ************************************************************************/
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<time.h>
#include<string.h>


int main(void)
{
    char hello[] = "...Hi Human, I am Linux";
    system("clear");
    printf("$>Hi, Linux I am human\n$>");
    fflush(NULL);
    sleep(1);
    int len = strlen(hello);
    for(int i = 0; i < len; i++)
    {
        printf("%c", hello[i]);
        fflush(NULL);
        usleep(100000);
    }
    return 0;
}