Question

Program pr_1; var x,y,sum, umn: integer; begin write ('x='); readln (x); write ('y='); readln (y); sum:=x+y; umn:=x*y; writeln ('sum=',sum); writeln ('umn=',umn); readln; end.

Answer 1

Программа работает. Вычисляет сумму введенных чисел и их произведение (x и y).

Answer 2

The code you provided appears to be written in Pascal, a high-level programming language. It is a simple program that reads two integers from the user, calculates their sum and product, and then displays the results.

Let's break down the code and explain what each part does:

Program pr_1;
var
  x, y, sum, umn: integer;

begin
  write('x=');
  readln(x);
  write('y=');
  readln(y);
  
  sum := x + y;
  umn := x * y;
  
  writeln('sum=', sum);
  writeln('umn=', umn);
  
  readln;
end.

Program Structure

The program starts with the line `Program pr_1;`, where `pr_1` is the name of the program. This line indicates the beginning of the program.

Next, we have the `var` section, where we declare the variables used in the program. In this case, we have four variables: `x`, `y`, `sum`, and `umn`, all of type `integer`. These variables will be used to store the user input and the calculated results.

Input

The `begin` keyword marks the beginning of the main program block. The first line of code inside the block is `write('x=');`, which displays the message "x=" to the console. The `write` procedure is used to output text to the console without a newline character.

The next line, `readln(x);`, reads a value from the user and assigns it to the variable `x`. The `readln` procedure waits for the user to input a value and press Enter.

The same process is repeated for the variable `y`. The line `write('y=');` displays the message "y=" to the console, and `readln(y);` reads a value from the user and assigns it to the variable `y`.

Calculation and Output

After reading the values for `x` and `y`, the program calculates the sum and product of these two numbers.

The line `sum := x + y;` adds the values of `x` and `y` and assigns the result to the variable `sum`.

The line `umn := x * y;` multiplies the values of `x` and `y` and assigns the result to the variable `umn`.

Finally, the program displays the results using the `writeln` procedure. The lines `writeln('sum=', sum);` and `writeln('umn=', umn);` output the values of `sum` and `umn` along with a descriptive message to the console.

End of the Program

The line `readln;` is used to pause the program and wait for the user to press Enter before closing the console window. This is done to keep the console window open after the program finishes executing.

The program ends with the `end.` statement, which marks the end of the program.

Overall, this Pascal program prompts the user to enter two integers, calculates their sum and product, and then displays the results on the console.