FullName separation

#include "stdafx.h"
#include <stdio.h>
#include "string.h"
#include <cstdlib>

void main()
{
    int i=0, j=0, k=0;
    char fullName[100];
    char firstName[30], middleName[30], surname[30];
    char initial;

    system("cls");
    printf("Enter your full name: ");

    gets_s(fullName);
    printf("Thank you %s\n\n", fullName);

    //FirstName
    while(fullName[i]!=32)
    {
        firstName[i] = fullName[i];
        i++;
    }
    firstName[i] = 0;

    //MiddleName
    i++;
    while (fullName[i]!= 32)
    {
        middleName[j] = fullName[i];
        i++; j++;
    }
    middleName[j] = 0;
    initial = middleName[0];

    //Surname
    i++;
    while (fullName[i]!=0)
    {
        surname[k] = fullName[i];
        i++; k++;
    }
    surname[k] = 0;

    printf("%s %c %s \n", firstName, initial, surname);
}
//by Jaroslaw Janas