Page 90 - TCS ICT Book 8

The City School 2021-2022

Logical Operators

Logical operators are similar to Boolean expressions that return a boolean result.
These operators are called binary because they acquire two operands.

Operator Meaning

AND Both sides must be true
OR One one the two conditions must be true

XOR One side or other must be true but not both
NOT Negates truth

4.10. Looping Statements

In computer programming, a loop is a sequence of

instructions that is repeated until a certain condition
is reached. An operation is done, such as getting an

item of data and changing it, and then some condition
is checked such as whether a counter has reached As of 1st quarter 2020, Google Play
store contains 2.9 million apps, while
a prescribed number. In Visual Basic, we have two Apple AppStore is the second-largest
app store with approximately 1.85
different structures that support repetitions, or loops million available apps for iOS.

as they are called in programming languages.

For...Next Loop

What if we want to add all the integers from 1 to 50? Of course, we are not going to
start writing 1+2+3+…, we are going to program the computer to do the same thing

using loops.
Follow the steps below to create a program using Loops.

1. Create a new form. Drag two labels and one

button from the toolbox panel and place on the
form.
2. Set the text property of first label to

1+2+3+...+50:

3. Set the text property of the second label to
result and set its name property to lblResult.

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