12. Чему будет равно значение переменной с после выполнения программы? a) a = b = 3 a += 1 c = a + b б) a = b = 5 a += b c = 2 * a - b в) a = b = 1 a *= 10 c = a / (2 * b) г) a, b = 3, 5 b += 2 c = a + b д) a, b = 5, 3 b += a c = 10 * b / a е) b, a = 5, 2 b **= a c = b / a * 4

Решим каждый пример: а) a = b = 3 a += 1 c = a + b * `a = b = 3` -> `a = 3`, `b = 3` * `a += 1` -> `a = a + 1 = 3 + 1 = 4` * `c = a + b` -> `c = 4 + 3 = 7` Ответ: c = 7 б) a = b = 5 a += b c = 2 * a - b * `a = b = 5` -> `a = 5`, `b = 5` * `a += b` -> `a = a + b = 5 + 5 = 10` * `c = 2 * a - b` -> `c = 2 * 10 - 5 = 20 - 5 = 15` Ответ: c = 15 в) a = b = 1 a *= 10 c = a / (2 * b) * `a = b = 1` -> `a = 1`, `b = 1` * `a *= 10` -> `a = a * 10 = 1 * 10 = 10` * `c = a / (2 * b)` -> `c = 10 / (2 * 1) = 10 / 2 = 5` Ответ: c = 5 г) a, b = 3, 5 b += 2 c = a + b * `a, b = 3, 5` -> `a = 3`, `b = 5` * `b += 2` -> `b = b + 2 = 5 + 2 = 7` * `c = a + b` -> `c = 3 + 7 = 10` Ответ: c = 10 д) a, b = 5, 3 b += a c = 10 * b / a * `a, b = 5, 3` -> `a = 5`, `b = 3` * `b += a` -> `b = b + a = 3 + 5 = 8` * `c = 10 * b / a` -> `c = 10 * 8 / 5 = 80 / 5 = 16` Ответ: c = 16 е) b, a = 5, 2 b = a c = b / a * 4 * `b, a = 5, 2` -> `b = 5`, `a = 2` * `b = a` -> `b = b a = 5 2 = 25` * `c = b / a * 4` -> `c = 25 / 2 * 4 = 12.5 * 4 = 50` Ответ: c = 50