The Lottery Random Numbers (v 0.11)

/*  The Lottery Random Numbers (v 0.11)
 *  Copyright ©2011 - @uthor #Utroz(RsC)#.
 *  File: main.c
 *  Blog: http://Gcoders.wordpress.com/ (Access it)!
*/

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

// This is amount of possible numbers.
const int P_NUMBERS = 60;

// This is a total combination numbers.
int total_Count = 0;

// Reference time.
int start_Time = 5;
double current_Time;

enum boolean
{
    false = 0,
    true = 1
};

typedef enum boolean bool; // allows create a statment of various types.
bool arg; // reference on method 'calculate'.

struct ref
{
    time_t start;
    time_t finish;
};
struct ref calc_Time;

void calculate();

// Overwritten.
void calculate(arg)
{
    calc_Time.start = time(0);

    /* Each variable below is a
        combination number. */
    int num_1, num_2, num_3, num_4, num_5, num_6;

    for(num_1 = 1; num_1 <= P_NUMBERS; num_1++)
    {
        for(num_2 = num_1 + 1; num_2 <= P_NUMBERS; num_2++)
        {
            for(num_3 = num_2 + 1; num_3 <= P_NUMBERS; num_3++)
            {
                for(num_4 = num_3 + 1; num_4 <= P_NUMBERS; num_4++)
                {
                    for(num_5 = num_4 + 1; num_5 <= P_NUMBERS; num_5++)
                    {
                        for(num_6 = num_5 + 1; num_6 <= P_NUMBERS; num_6++)
                        {

                            /* Increment more one on total count! */
                            ++total_Count;

                            if(arg == true)
                            {
                              calc_Time.finish = time(0);
                              current_Time = (calc_Time.finish - calc_Time.start)*0.01;
                              printf("\t| %d | %d | %d | %d | %d | %d \t|| Current Count: %d \t|| Current Time: %.2f |\n", num_1, num_2, num_3, num_4, num_5, num_6, total_Count, current_Time);

                            }

                        }
                    }
                }
            }
        }
    }

    printf("\nTotal count of combination numbers: %d.\nTotal time used in processing: %.2f.\n", total_Count, current_Time);
}

// Reset current data.
void resetData(){
    total_Count = 0;
    current_Time = 0;
}

int main ()
{
    printf("\t#############################################\n");

    printf("\t#  The Lottery Random Numbers   (v 0.11)    #\n");
    printf("\t#  Copyright ©2011 - @uthor |Utroz|         #\n");

    printf("\t#############################################\n");

    int menu_Option = 0;

    int infinite_Loop = - 1;
    while(infinite_Loop == -1)
    {

        printf("\n| Main Menu: |\n--------------------");
        printf("\n-Total combination count: [1]\n-Show all combinations: [2]\n-System exit: [0]\n");
        printf("\nPlease choose a Option:\n");
        scanf("%d", &menu_Option);
        fflush(stdin); // Clean the read buffer.

        switch(menu_Option)
        {
            case 0:
                printf("\nThanks for use the system!\n");
                exit(1);
                break;

            case 1:
                calculate(false);
                resetData();
                break;

            case 2:

                while(start_Time >= 0)
                {

                    sleep(1);

                    printf("Remaining %d seconds to start system...\n", start_Time);

                    start_Time--;

                }

                calculate(true);
                resetData();


            default:
                printf("Please input a valid option!\n");
                break;
        }
        menu_Option = 0;
    }
    return 0;


}