What is the output of the third algorithm block?

The third algorithm block declares three real variables: x, y, and z. It reads a value into x (which is 5.5). Then it assigns the value 5.5 to y. After that, it calculates z as the difference between x and y (x - y), and finally outputs the value of z.

The calculation will be 5.5 - 5.5 = 0.0.

Output: 0.0