Could somebody help me?

I just need to know how you take a "picture" of your screen. I've been working on programming (the devil subject) and I need to turn in my screen, but I don't know how to save it. Anybody?

Printscreen, paste in paint, save.

Alleluia, you're a life saver. I don't believe i'm thinking very clearly this evening...its gotta be all the linear algebra i've studied. I hate exams. Now if only you could make my program work for me too! Finding the right code to determine if a number is prime or composite isn't easy.

😖