C++ Tutorial/Language Basics/main function

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A C++ program begins at main()

<source lang="cpp">#include <iostream> using namespace std;


int main() {

 cout << "www.java2s.com"; 

 return 0; 

}</source>

www.java2s.com"

Call a function in main

<source lang="cpp">#include <iostream>

void DemonstrationFunction()
{
    std::cout << "In Demonstration Function\n";
}

int main()
{
    std::cout << "In main\n" ;
    DemonstrationFunction();
    std::cout << "Back in main\n";
    return 0;
}</source>
In main
In Demonstration Function
Back in main