[C] How to print "Hello World" by System Call with C

/*
/*
ssize_t write(int filedes, const void *buf, size_t nbytes);
    0 : STDIN_FILENO
    1 : STDOUT_FILENO
    2 : STDERR_FILENO
*/
 
#include <string.h>
#include <unistd.h>
 
int main(int argc, char *argv[]){
 
    int std = 1;
    char str[] = "Hello World\n";
 
    write(std, str, strlen(str));
    return 0;
 
}