Structure of C++ program: In this section, we are going to learn regarding the structure of a C++ program with examples. Also, we have explained the terms used in the program.
Structure of a C++ program
Let us write the first program in C++. And now in detail regarding the structure of C++ program.
Example:
#include<iostream.h>
#include<conio.h>
void main( ) {
clrscr();
cout << "This is my first C++ Programming.";
getch();
}
Let us know in detail regarding the program and the terms used in it.
#include<iostream.h>
It includes the standard input and output library functions. And in C++ language we are having a different type of header files. But, in this program, we are using <iostream>.
#include<conio.h>
It consists of console input and output library functions. And the getch( ) function is used in conio.h file.
void main( )
As we all know that the main( ) function is the entry to any of the programming language. Besides that, the void( ) keyword defines that it returns no value.
Cout<<
In C++ programming Cout is used to print the data on the console. Whatever you write next to it will be printed on the console.
Cin>>
We are also having the cin>>, which is used for reading the input from the keyboard. And in is the predefined class of the istream class.
getch( )
The getch( ) function asks every single character. Until you press any key it blocks the screen.
Compile and Running the C program
We can compile and execute the program in two ways. They are as follows:
By using the menu
- Click on the compile menu and then click on the submenu to compile the Program.
- Then click on the run menu and then run submenu to run a C++ program.
By using shortcut
Press ctrl+f9 keys to compile and run directly. If you want to see the user screen anytime, then press alt+f5 keys.
If you want to get out from the console press ESC key.