Question

Определите значение переменной a после выполнения фрагмента программы: a := 10; b := 3; if a > b then b := b + 12 else a := a - 7; if a > b then a := a + 12 else a := a - 7;

Answer 1

До выполнения ветвлений а = 10, b = 3
После первого ветвления а = 10, b = 15
После второго ветвления а = 3, b = 15

Answer 2

Value of variable 'a' after executing the program fragment:

To determine the value of variable 'a' after executing the given program fragment, let's go through the code step by step:

1. Initialize variables: - `a := 10` - `b := 3`

2. Evaluate the first 'if' statement: - `if a > b then b := b + 12 else a := a - 7` - Since `a` (10) is greater than `b` (3), the condition is true. - Therefore, `b` is updated to `b + 12`, which becomes 15.

3. Evaluate the second 'if' statement: - `if a > b then a := a + 12 else a := a - 7` - Now, `a` is 10 and `b` is 15. - Since `a` is not greater than `b`, the condition is false. - Therefore, `a` is updated to `a - 7`, which becomes 3.

After executing the given program fragment, the final value of variable 'a' is 3.

Please let me know if you have any further questions!