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Conditions and branches

Conditions consist of comparison operators that produce the value of Boolean (True or False)

For example the comparison operand a > 5:

If the value of left operand (in this case the value of variable a) is greater than the right operand (number 5) the condition becomes True or else we get a False:

...
a = 6
a > 5  ← True

a = 5
a > 5  ← False 

For example the comparison operand a >= 5:

If the value of left operand is greater than and equal to 5 the condition becomes True, or else we get a False.

...
a = 6
a >= 5  ← True

a = 5
a >= 5  ← True 

Logic operations

Conditions may consist of logic operations: not, or, and. If there are more than one condition, so each condition must be in round brackets.

For example for two conditions:

(year < 20) or (year > 18)

If one of the conditions or both conditions are True then the whole condition is True.

Or another example:

a = 5
(not a<4) and (7>5)  ← True

The statements write and print can also return True or False:

...
a = 5;
write (a >= 5); // returns True
...

Tasks (conditions)

In this section you cannot use a conditional statement, you can use only write or print statement.

1. {0.5 points}[task-01-bool.pas] Two integers are given. Check if the next statement is True: the first number is greater than the second (the program must return True if it is true and False otherwise).

2. {0.5 points}[task-02-bool.pas] Two integers are given. Check the truth of the statement: the first number is not equal to the second. (the program must return True if it is true and False otherwise).

3. {0.5 points}[task-03-bool.pas] Three integers are given: the values of variables A, B, C. Check the truth of the double inequálity A < B < C. Make sure that your program is correct with at least two input data sets, give the log of the program in the form of a comment.

4. {1 point}[task-04-bool.pas] Three-digit integer is given. Check the truth: the first digit (left digit) of the number is less than the second (middle) and third (right).

5. {1 point}[task-05-bool.pas] Two integers are given. Check the truth of the statement: at least one of these numbers is odd.

Note. Use the standard odd function:

The function odd returns True when its argument is odd integer:

print (odd(5)); // true 
print (odd(6)); // false 

  -5,  8 >>> True
  12,  0 >>> False
  6, -1 >>> True
  11,  7 >>> True