Question

Даны две числовые переменные a и b. Необходимо присвоить переменной a значение переменной b, переменной b необходимо присвоить значение переменной a, без использования дополнительных переменных.

Answer 1

Var a,b:integer;
begin
read(a,b);
a:=a+b;
b:=a-b;
a:=a-b;
writeln('a=',a,' b=',b);
end.

Answer 2

Swapping Values of Two Variables Without Using Additional Variables in Python

To swap the values of two variables `a` and `b` without using additional variables in Python, you can use the following approach:

a, b = b, a

This single line of code swaps the values of `a` and `b` without the need for an additional variable.

This method takes advantage of the fact that the right-hand side of the assignment is evaluated before any of the assignments take place, allowing the values to be swapped without the need for a temporary variable.

Example

```python a = 5 b = 10 print("Before swapping:") print("a =", a) print("b =", b)

# Swap the values of a and b a, b = b, a

print("After swapping:") print("a =", a) print("b =", b) ```

When you run the above code, the output will be: ``` Before swapping: a = 5 b = 10 After swapping: a = 10 b = 5 ```

This demonstrates how the values of `a` and `b` have been successfully swapped without using additional variables.

I hope this helps! If you have further questions, feel free to ask.