basic cpp programs

1// Your First C++ Program
2
3#include <iostream>
4
5int main() {
6    std::cout << "Hello World!";
7    return 0;
8}
9

1#include<iostream.h>
2#include<conio.h>
3void main()
4{
5	clrscr();  // clear the screen
6	cout<<"Hello Compiler, I am C++";
7	getch();  // holds output screen until user press a key
8}

1#include <iostream>
2
3int main() {
4    std::cout << "Hello World!";
5    return 0;
6}