I know how to make it spin I just don’t know how to insert the amount of degrees.
Try using one of the other spin methods, eg spinToPosition() - that one sends it to an absolute value (if you want relative position you would sample the current value first).
You are in the RobotC channel so I am assuming that you are not using V5. The V5 motors have integrated motor encoders but the RobotC, Cortex, 393 motors do not.
You would need to use a sensor to measure the motor rotation. One option is with the Optical Shaft Encoder here: Optical Shaft Encoder (2-pack) - VEX Robotics
Let’s start with what programming language you are using. You’ve tagged ROBOTC support, but your question mentions C++, which could refer to Vexcode Pro V5 or PROS. Which one are you using?
sorry I am in vexcode pro
motor.spinFor(100, degrees);
Simple answer. In this example the name of the motor is Motor1
Motor1.spinFor(forward, 90, degrees);
ok thanks it works now