Stuff

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

int main(void)
{
    char charIn;

    start:
    system("cls");
    system("color 0a");
    system("title Handelsrechner                                                                                              MrDj 2015");
    printf("Was m\x94\chtest du machen?\n\n");
    printf("[1] Neue Handelsdaten\n");
    printf("[C] Das Programm schliessen\n");
    printf("Eingabe: ");
    scanf("%c", &charIn);
    fflush(stdin);

    switch( charIn  )   {

        case '1':
            newTrade();
            break;
        case 'd':
            writeFile();
            break;
        case 'c':
            killProgramm();
            break;
        case 'C':
            killProgramm();
            break;
        default:
            system("cls");
            printf("Unknown Option: \"%c\" \n! Please try again!\n", charIn);
            system("pause");
            goto start;
            break;

    }

    system("PAUSE");
    return 0;
}

int newTrade(void)  {

    char charCurrentSystem[100], charCurrentStation[100];
    char charCurrentCargoSelling[100], charCurrentCargoSellingWeight[100];
    char charCurrentCargoBuying[100], charCurrentCargoBuyingWeight[100];

    system("cls");

    printf("Aktuelles System\n");
    printf("    >>");
    scanf("%s", &charCurrentSystem);
    fflush(stdin);

    printf("\n");

    printf("Aktuelle Station\n");
    printf("    >>");
    scanf("%s", &charCurrentStation);
    fflush(stdin);

    printf("\n");
    printf("\n");

    printf("Aktueller Fracht-ankauf\n");
    printf("    >>");
    scanf("%s", &charCurrentCargoBuying);
    fflush(stdin);

    printf("\n");

    printf("Aktuelles Fracht-ankauf Gewicht (in t)\n");
    printf("    >>");
    scanf("%s", &charCurrentCargoBuyingWeight);
    fflush(stdin);

    printf("\n");
    printf("\n");

    printf("<|>%s / %s \n      >%s  %st\n\n", charCurrentStation, charCurrentSystem, charCurrentCargoBuying, charCurrentCargoBuyingWeight);

    system("PAUSE");
    main();

}

int writeFile(void) {

    char* charUsername;
    char* charDate;

    charUsername = getenv("USERNAME");

    system("cls");

    //printf("Name: %s \nDatum: %s", charUsername, charDate);
    SYSTEMTIME str_t;
    GetSystemTime(&str_t);

    printf("%d.%d.%d\n", str_t.wDay, str_t.wMonth, str_t.wYear);

}

int killProgramm(void) {

    system("cls");
    system("pause");
    printf("\n\n!!!!ELITE: DANGEROUS IST GEIL!!!!\n\n");
    system("exit");

}