struct info char sn 30 int mark int main void char filename 50 char me

struct info
{
    char sn[30];
    int mark[4];
};

int main(void)
{
    char filename[50];
    char menu;
    int ball=300;
    puts("Enter file name");
    gets(filename);
    do
    {
        system("cls");
        puts("1 Add new puipl");
        puts("2 Edit");
        puts("3 Show list");
        puts("4 Delet ");
        puts("5 Loosers");
        puts("6 Succes");
        puts("7 Exit");
        menu=getchar();
        switch(menu)
        {
            case '1' : add(filename);
            break;
            case '2' : edit(filename);
            break;
            case '3' : show(filename);
            break;
            case '4' : delet(filename);
            break;
            case '5' : loosers(filename,ball);
            break;
            case '6' : succes(filename,ball);
        }
    }
        while(menu!='7');
        return 0;
    }