Thread: How to change the color and clear the screen?

1. How to change the color at the text? like

Code:

include <iostream.h>//which more files i need?

int main(){

changecolor//how to change the text color?
cout << "This text is red..."; //... or should be
return 0;
}

2. How to clear the screen? Example i make a "cout" saying "hello world". How then i clear the screen so it isnt there anymore?