#include <stdio.h>

int main(int argc, char *argv[])
{
        char *p = "My Name is Neo";

        printf("First 5 bytes of string is '%.5s'\n", p);
        return 0;
}

Result

[neo@techpulp ex]# gcc example.c -o example
[neo@techpulp ex]# ./example
First 5 bytes of string is 'My Na'
[neo@techpulp ex]#