Switch vs if comparison - Quick Revision & Key Differences

Recall & Review

beginner

What is a switch statement in C?

A switch statement lets you choose between many options based on the value of a single variable. It is like a menu where you pick one case to run.

beginner

How does an if statement differ from a switch statement?

if can check many different conditions, including ranges and complex expressions. switch only checks one variable against fixed values.

intermediate

When is it better to use switch instead of if?

Use switch when you have one variable and many fixed values to compare. It makes code cleaner and easier to read.

beginner

Can switch statements handle ranges or complex conditions?

No, switch only matches exact values. For ranges or complex checks, use if statements.

beginner

What happens if no case matches in a switch?

If no case matches, the default case runs if it exists. Otherwise, the switch does nothing.

Which statement is true about switch in C?

A It automatically handles string comparisons.

B It can check multiple variables at once.

C It can evaluate complex conditions like ranges.

D It can only compare one variable to fixed values.

switch compares one variable against fixed values only. It does not handle multiple variables or complex conditions.

When should you prefer if over switch?

A When checking one variable against many fixed values.

B When checking complex conditions or ranges.

C When you want cleaner code for fixed values.

D When you want to use <code>default</code> case.

if is better for complex conditions or ranges. switch is for simple fixed value checks.

What does the default case do in a switch?

A Is required in every <code>switch</code>.

B Runs before any case.

C Runs if no other case matches.

D Runs only if the first case matches.

default runs when no other case matches the variable.

Which control structure can handle checking if a number is greater than 10?

A <code>if</code>

B <code>switch</code>

C Both <code>switch</code> and <code>if</code>

D Neither

if can check conditions like greater than 10. switch cannot.

Which is a benefit of using switch over multiple if statements?

A Runs faster and is easier to read for many fixed values.

B Can check complex expressions.

C Can handle floating point comparisons.

D Automatically breaks after each case.

switch is often faster and cleaner when checking many fixed values of one variable.

Explain the main differences between switch and if statements in C.

Think about what each can check and how they decide which code to run.

Describe a situation where using a switch statement is better than using multiple if statements.

Imagine choosing from many fixed options like a menu.