Question

1.      What is the value of x after each of these statements is encountered in a computer program, if x = 1 before the statement is reached?

a)      if x + 2 = 3 then x := x + 1

Answer 1

Since the statement $1+2=3$ is true, it follows that after the command "if x + 2 = 3 then x := x + 1" the value of $x$ is equal to $1+1=2.$