Basic structure of C++ program:

A program in C++ consists of the following parts:

1) Preprocessor directive

2) Main() function

3) Body of program(C++ statements)


preprocessor directive

main()
{
     
       C++ statements;
}

Example:

#include<iostream>
using namespace std;

 int main()
{
     cout<<"Hello world !";
     return 0;
}