Check out example codes for "C++ Syntax". It will help you in understanding the concepts better.

Code Example 1

#include<iostream>
using namespace std;
int main()
{
	system("pause"); //To pause the screen
  	return 0; //Not neccessary
}

Code Example 2

#include <iostream>

int main() {
  std::cout << "Hello World!";
  return 0;
}

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