a very simple question about visual c++

[jeppesen]

hi, i'm using visual c++ express 2008.
i have built a project called helloworld.
under this project i created a source file, it contains code which writes "hello" on screen.
then, i created another source file under the same project, which adds 2 integers and displays on screen.
when i try to run the second program, it runs the first program.
how do i run the second program???

[helios]

On the solution explorer, right click on the newer project > Set as StartUp Project.
It's always better to run programs from the console, though. Don't start the debugger needlessly.

[jeppesen]

helios, i didn't create another project. i created another source file under the same project. when i am on the new source code window, i press the "start without debugging" button, but it runs the first source code. how do i get the second source code run?

[filipe]

Would you care to post the code for both .cpp files?

[jeppesen]

this is the first source file:

// first c++ program, b.
#include <iostream>

// main function starts here
int main()
{
std::cout <<"Welcome \nto\n\nC++!\n\a"; // this message will be displayed on screen
return 0;
}


this is the 2nd:

#include <iostream> //this line allows to program to perform input and output

int main2() //main function starts here
{
//variable declarations
int number1;
int number2;
int sum;

std::cout <<"Please enter first integer: \n";
std::cin >> number1;

std::cout << "Please enter second integer: \n";
std::cin >> number2;

sum = number1 + number2;

std::cout << "The sum of integers is: " << sum << std::endl;
return 0;

[helios]

main2()? What?

A single project can only create a single executable. The entry point for programs is always main(), and nothing else.

[jeppesen]

so, i have to create another project to run the second program?
if yes, what is the use of multiple source files under same project?

[helios]

what is the use of multiple source files under same project?

Organization and convenience.