What will the following pseudo code program display?
Module main ( )
Declare Integer x = 1
Declare Real y = 3.4
Display x, “ “, y
Call changeUs (x, y)
Display x, “ “, y
End Module
Module changeUs ( Interger a, Real b)
Set a = 0
Set b = 0.0
Display a, “ “, b
nothing - there is a syntax error.
The pseudo code program will display the following:
1 3.4
0 0.0
Explanation:
- The `main` module starts by declaring an integer variable `x` with the value 1 and a real variable `y` with the value 3.4.
- Then, it displays the values of `x` and `y`, which is 1 and 3.4 respectively.
- The `changeUs` module is called and passed the values of `x` and `y`.
- Inside the `changeUs` module, the integer variable `a` is set to 0 and the real variable `b` is set to 0.0.
- Finally, the `a` and `b` values are displayed, which is 0 and 0.0 respectively.
- After the `changeUs` module is called, the control returns to the `main` module and the values of `x` and `y` are displayed again. This time, `x` is also 0 and `y` is also 0.0, as the changes made inside the `changeUs` module affect the original variables.