C++ Program Structure

Before going into the C++ program language, you need to learn C++ program structure.

C++ Program Structure

C++ program primarily divided into 5 parts

• Preprocessor
• Functions
• Variables
• Statements & Expressions.
• Comments

Simple C++ Program

#include <iostream>     
using namespace std;

int main() 
{  
   cout << "Welcome to Onlinetpoint"; 
   return 0;
}

• #include <iostream> is preprocessor command. It is standard input output library functions.
• int main() is main function where the program start execution.
• /* ... */ is comment line which ignored by the compiler.
• cout << "Welcome to Programtpoint"; is display the message "welcome to programtpoint" on the screen.
• using namespace std; This line help the compiler to use the std namespace.
• return 0; statement is terminates the main() function. 0 and 1 value are successful and unsucessful execution.

Additional Information

• #include<conio.h> is used for performing console input and output functions.
• getch() - It is used to hold the screen in simple language if you don’t write this screen will just flash and go away. By using this function we can read a character directly from the keyboard.