Comparison between if-else if and switch-case

Single Choice
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Answer:

Here’s a clear tabular comparison between if-else if and switch-case:

Feature if-else if switch-case
Condition Type Evaluates complex conditions using relational and logical operators (e.g., &&, `  
Data Types Supported Supports all data types, including numbers, strings, and boolean. Limited to specific data types like integers, enums, characters, and strings (depending on the language).
Readability Becomes less readable with many conditions. Easier to read and maintain for multiple discrete cases.
Flexibility Highly flexible; can handle ranges, logical conditions, and functions in conditions. Limited flexibility; cannot handle ranges or complex logic directly.
Performance Sequential evaluation; slower for many conditions. Can use a jump table internally (in some languages), making it faster for many discrete cases.
Fall-Through No fall-through; only one block executes. Requires break to avoid fall-through between cases.
Default Handling Optional else block for a default condition. Optional default case for unmatched conditions.
Usage Scenario Ideal for complex conditions or when comparing ranges. Best for comparing a variable to discrete, constant values.

Example of Each

if-else if Example:


int number = 5;
if (number < 0) {
    System.out.println("Negative");
} else if (number == 0) {
    System.out.println("Zero");
} else {
    System.out.println("Positive");
}

switch-case Example:


int day = 3;
switch (day) {
    case 1:
        System.out.println("Monday");
        break;
    case 2:
        System.out.println("Tuesday");
        break;
    case 3:
        System.out.println("Wednesday");
        break;
    default:
        System.out.println("Other day");
}

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