Can you explain what is the meaning of ++ and - -

2. State the result of the following operations given the variable types and their initial values as indicated below. Each expression is independent of the others. ie each expression starts with the values as specified. [1/2 mark each] int x = 8; int a8 int y 24; int b 24; int s; float r c, s = 1 1 + x%5; d. r-a-17/x+x*3