Hello,world! Part 4

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Hello, World!

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Your First C++ Program

The next line, cout << "Hello world!"; results in the display of "Hello world!" to the screen.

#include <iostream>
using namespace std;

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

In C++, streams are used to perform input and output operations.
In most program environments, the standard default output destination is the screen. In C++, cout is the stream object used to access it. 
cout is used in combination with the insertion operator. Write the insertion operator as << to insert the data that comes after it into the stream that comes before.
In C++, the semicolon is used to terminate a statement. Each statement must end with a semicolon. It indicates the end of one logical expression.