Need help with switch and arrays!!

[nicbono]

I am trying to make a program with a menu, using a switch statement. It contains arrays to store numbers. I am in the early stages and have hit a brick wall and just need some assistance with getting past it.

Problem:
I cannot get any display in cmdpromt once I have entered a menu selection outside of my case 1:. I'll be honest, my code probably doesn't look the best as I have tryed so many things that I am now at whits end.

N.B: everything below compiles. I know what I need to do within to make it add a mark but nothing is showing on the screen!!

Please respond with question and suggestions. Thank you!

---BEGINNING OF CODE---

#include <iostream>
#include <string>
#include <iomanip>
#include <cstring>
using namespace std;

int SID = 0;
int StudM = 0;
// global statements above.


void AddMark(double StudM[], int StudCount[], int TotalM);
// prototypes above.

int main ()
{
int loop=1;
int choice;


while (loop==1)
{
system ("CLS"); //Question 3
cout << " ** MENU **\n\n"
<< "0. Exit \n"
<< "1. Add Student mark \n"
<< "2. List all student marks \n"
<< "3. Calculate the marks average \n"
<< "4. Calculate the standard deviation \n"
<< "5. Delete a student mark \n"
<< "6. find the number of students via mark \n"
<< "7. Display distinct marks and their occurrences \n";
cout << "\n\nSelect from the menu above: ";
cin >> choice;
switch(choice)
{
case 0:
cout << "Good bye\n\n";
system ("pause");
exit(0);
case 1:
system ("CLS");
void AddMark(double StudM, int StudCount, int TotalM); //Add Student mark.
system ("pause");
system ("CLS");
main();
break;

case 2:
system("CLS");
cout << "\t-- List all student marks --\n\n";
system ("pause");
system("CLS");
break;

case 3:
system("CLS");
cout << "\t-- Calculate the marks average --\n\n";
system ("pause");
system("CLS");
break;

case 4:
system("CLS");
cout << "\t-- Calculate the standard deviation --\n\n";
system ("pause");
break;

case 5:
system("CLS");
cout << "\t-- Delete a student's mark --\n\n";
system ("pause");
system("CLS");
break;

case 6:
system("CLS");
cout << "\t-- Find the number of students via a mark --\n\n";
system ("pause");
system("CLS");
break;

case 7:
system("CLS");
cout << "\t-- Display distinct marks and thei occurrences --\n\n";
system ("pause");
system("CLS");
break;

}
}

}

// 1. Add a student mark!

void AddMark(double StudM, int StudCount, int TotalM){

system("CLS");
cout << "\t-- Add Student Mark --\n\n";
cout << "Enter mark: " <<endl;
cin >> StudM;
system ("pause");



}


---END OF CODE!---

[nicbono]

** I forgot to change all the voids back to ints. To be frank I am not even sure anymore what they should be.

[matsom]

use code tags to highlight your codes: http://www.cplusplus.com/forum/articles/42672/

op wrote:

everything below compiles.

no, it shouldn't compile:

1. you're using system() calls that need the <stdlib.h>/<cstdlib> library
http://www.cplusplus.com/reference/clibrary/cstdlib/
http://www.cplusplus.com/forum/articles/11153/

2. your function declaration did not match your function definition
http://www.cplusplus.com/doc/tutorial/functions/ and http://www.cplusplus.com/doc/tutorial/functions2/
http://www.cplusplus.com/doc/tutorial/arrays/

3. you're calling your function wrongly in main(): void AddMark(double StudM, int StudCount, int TotalM); //Add Student mark. -refer to the function tutorials in (2)

[nicbono]

Thank you for your input matsom