Make a program for the exchange of values of two variables: according to the following scheme

Make a program for the exchange of values of two variables: according to the following scheme: b-assign a value with a-assign a value b.

Let’s compose a program for exchanging the values of two variables:

Program 1;

Var a, b, c: integer;

begin

writeln (‘enter the value of the variable a’);

readln (a);

writeln (‘enter the value of variable b’);

readln (b);

c: = a;

a: = b;

b: = c;

writeln (‘Received value a =’, a);

writeln (‘Received value b =’, b);

end.

Let’s check the work of the program by going through the code sequentially:

Enter unknown variables a and b from the keyboard:

a = 5;

b = 7;

Let’s move on to the exchange:

c = 5;

a = 7;

b = 5;

The screen displays the following:

a = 7;

b = 5.

Thus, the exchange of variables took place.