swapping

Let A be a square matrix size $$n \times n$$. Consider the following pseudocode. What is the expected output? C = 100; for i = 0 to n do for j = 1 to n do { Temp = A[ i ][ j ] + C...

Which of the following actions is/are typically not performed by the operating system when switching context from process $$A$$ to process $$B$$ ?

What does the following code do? var a, b : integer; begin a:=a+b; b:=a-b; a:=a-b; end;