Home › Tutorials › C Tutorial › Nested if...else Statement
Nested if...else Statement

Nested if...else Statement

The if...else if Ladder

What is an Else-If Ladder?

The else-if ladder is used when you need to check multiple conditions in a specific order. It is an extension of the basic if...else statement.

The program starts at the top and checks each condition. As soon as it finds one that is True, it executes that block and then jumps to the very end of the entire ladder, skipping all remaining checks. If no conditions are true, the final else block (if present) is executed.

Syntax

if (condition1) {
    // Runs if condition1 is true
} else if (condition2) {
    // Runs if condition1 is false AND condition2 is true
} else if (condition3) {
    // Runs if prior conditions are false AND condition3 is true
} else {
    // Runs if ALL above conditions are false
}

Practical Examples

Example 1: Student Grading System

int score = 85;

if (score >= 90) {
    printf("Grade: A\n");
} else if (score >= 80) {
    printf("Grade: B\n");
} else if (score >= 70) {
    printf("Grade: C\n");
} else {
    printf("Grade: F\n");
}

Example 2: Number Categorization

int num = -5;

if (num > 0) {
    printf("Positive Number\n");
} else if (num < 0) {
    printf("Negative Number\n");
} else {
    printf("The number is Zero\n");
}
Performance Tip: Always place the most likely condition at the top of the ladder. This ensures the program finds a match faster and saves processing time!

🏋️ Test Yourself With Exercises

Take our quiz on Nested if...else Statement to test your knowledge.

Browse Quizzes »
Previous Next