WEBVTT

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Control structures, conditionals

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In this video, we will understand the purpose of conditionals in controlling program flow.

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Apply if, if else, and else if statements to solve simple problems.

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Use switch statements and logical operators to handle multiple conditions effectively.

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What are conditionals?

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Conditionals are statements that help a program make decisions.

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They allow the program to choose different actions depending on conditions.

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Control the flow of execution.

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Respond to different inputs or states.

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Make programs dynamic and interactive.

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If and if else statements.

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An if statement checks the condition and runs code only if it is true.

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Syntax. If condition.

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Code. Example. Checking if a number is positive.

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An if else statement provides two choices.

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If the condition is true, one block runs.

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If false, the other block runs.

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Example. Weather system.

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If temperature more than 25 degrees Celsius, print hot day.

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Else print cool day.

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Else if flatter and logical operators.

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When there are many conditions, we use an else if flatter.

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Example. Grading system.

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A, B, C, D, F based on score.

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We can also use logical operators to combine conditions.

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And, both conditions must be true.

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Or, at least one condition must be true.

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Not. Reverse the condition.

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Switch statements and best practices.

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A switch statement checks one value against many options.

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Useful for menu selections, calculators, and day converters.

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Always use a break to stop fall through.

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Best practices. Use proper indentation and comments.

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Avoid deep nesting by using logical operators.

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Ensure all possible conditions are handled.

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Conditionals make programs smart and responsive.

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They allow code to adapt to different inputs,

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making applications more dynamic and interactive.