main menu

[keystoneman]

I have done some work while in college and it is all saved, what I want to do is create a main menu program that will probably be driven off a case statment but anywho I was wondering if there was anyway I could attatch external .cpp files to the main menu.


Example ...

* If the user enters 1 then 1.cpp is loaded (1.cpp being a program I have already created)

* If the user enters 2 then 2.cpp is loaded (2.cpp being a program I have already created)

... and so on for however many programs I have saved, is this possible?

[frrossk]

You mean you want to call other programs from inside your program? This can be done using the spawnxx functions.

[keystoneman]

Yes I want to call other .cpp files from my mainmenu.cpp

[keystoneman]

?

[frrossk]

To call other programs, or to open .cpp files? These are 2 different kind of things, since a .cpp file is a text file, not a program...

[keystoneman]

Ok maybe I can make myself a little more clear, what I have right now is 12 independent programs that are due at the end of the semester. Instead of turning in a folder to my teacher where he has to click on each different .cpp to open it I would like to create another .cpp file and it would act as the main menu from here he could select lab 1 through lab 12 once he enters which lab he wants to see that .cpp file is then loaded.

Example

Which lab would you like to view?

1. Lab 1
2. Lab 2
3. Lab 3
4. Lab 4

(if the user enter the number 4 then the case statment loads 4.cpp)

.... is this posible or is there another way to do all of this?

[Valmont]

What means "loaded"? Do you just want to show the corresponding C++ code in console?

[keystoneman]

Yeah I just want to have the code shown, loaded was just a figure of speach.

[frrossk]

So, you have only to open the file (Lab x), then read the lines in that file and display them on the screen. A kind of:

fopen (Lab x);
while (!feof)
{
gets (file, string);
printf (string);
}

(just an idea)

[Valmont]

#include <iostream>
#include <string>
#include <fstream>

using std::cin;
using std::cout;
using std::string;
using std::ifstream;
using std::endl;
using std::getline;

int main(int argc, char *argv[])
{
   ifstream theFile;
   string theFileName;

   while(1)
   {
      cout<<"\t\t\tEnter the option:"<<endl;
      cout<<"\t\t\t1 = Lab 1.cpp"<<endl;
      cout<<"\t\t\t2 = Lab 2.cpp"<<endl;
      cout<<"\t\t\t3 = Lab 3.cpp"<<endl;
      cout<<"\t\t\t4 = Lab 4.cpp"<<endl;
      cout<<"\t\t\tCTRL+Z/D = quit."<<endl;

      getline(cin, theFileName);
      
      //User wants to quit?
      if( cin.eof() )
      {
         //User wants to quit. Get out of the while-loop.
         break;
      }
      
      //Assuming files are named like: Lab_1.cpp, Lab_2.cpp etcetera.
      theFileName.insert(0, "Lab_");
      theFileName += ".cpp";
      
      theFile.open( theFileName.c_str() );
      
      if( !theFile )
      {
         cout<<endl<<"ERROR!"<<endl;
         cout<<"Reason: could not open the file."<<endl;
         cout<<"Make sure your entry is valid."<<endl<<endl;
         theFile.close();
         theFile.clear();
      }
      
      if( theFile.is_open() )
      {
         cout<<"*** File starts below ***"<<endl<<endl;
         cout<<theFile.rdbuf();
         cout<<endl<<"*** File ended ***"<<endl<<endl;
         theFile.close();
      }
   }
   
   return 0;
}

[keystoneman]

I'll mess around with it Val, thanx and I'll get back to you.