Question

В алгоритме, за­пи­сан­ном ниже, ис­поль­зу­ют­ся пе­ре­мен­ные a и b. Сим­вол «:=» обо­зна­ча­ет опе­ра­тор присваивания, знаки «+», «-», «*» и «/» — соответственно опе­ра­ции сложения, вычитания, умно­же­ния и деления. Пра­ви­ла вы­пол­не­ния опе­ра­ций и по­ря­док дей­ствий со­от­вет­ству­ют пра­ви­лам арифметики. Опре­де­ли­те зна­че­ние пе­ре­мен­ной a после вы­пол­не­ния алгоритма: а := 1 b := 2 b := 3 + a*b а := b/5*a*4 В от­ве­те ука­жи­те одно целое число — значение пе­ре­мен­ной a.

Answer 1

а = 1
b = 2
b = 3 + a*b = 3+1*2 = 3+2 = 5
а = b/5*a*4 = 5/5*1*4 = 1*1*4 = 4

Answer 2

Algorithm Explanation:

The given algorithm uses variables `a` and `b` and performs a series of arithmetic operations on them. The `:=` symbol represents the assignment operator, while the `+`, `-`, `*`, and `/` symbols represent addition, subtraction, multiplication, and division operations, respectively. The order of operations follows the rules of arithmetic.

Let's go through the algorithm step by step to determine the value of variable `a` after its execution:

1. `a := 1`: The value of `a` is assigned as 1. 2. `b := 2`: The value of `b` is assigned as 2. 3. `b := 3`: The value of `b` is reassigned as 3. 4. `a * b`: The values of `a` and `b` are multiplied together. The result is 1 * 3 = 3. 5. `a := b / 5 * a * 4`: The value of `b` is divided by 5, then multiplied by the current value of `a`, and finally multiplied by 4. The result is (3 / 5) * 3 * 4 = 7.2.

Therefore, the final value of variable `a` after the execution of the algorithm is approximately 7.

Calculation Steps:

Here are the step-by-step calculations for each operation:

1. `a := 1` - `a = 1`

2. `b := 2` - `b = 2`

3. `b := 3` - `b = 3`

4. `a * b` - `a * b = 1 * 3 = 3`

5. `a := b / 5 * a * 4` - `a := (3 / 5) * 3 * 4` - `a := 0.6 * 3 * 4` - `a := 7.2`

Therefore, the final value of variable `a` is approximately 7.

[[1]]