🪜 if-else if Ladder in C

🧪 Short Explanation:
The if-else if ladder checks multiple conditions one by one. The first true condition runs its block and skips the rest. If none match, the else block runs (optional).

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✅ Syntax

if (condition1) {
    // block 1
} else if (condition2) {
    // block 2
} else if (condition3) {
    // block 3
} else {
    // default block
}
  

📋 Example

#include <stdio.h>

int main() {
    int score = 75;

    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 D\\n");
    }

    return 0;
}
  

🧠 Output: Grade C

💡 Common Use Cases

• Grading systems
• Tax calculation slabs
• Menu or user input logic

⚠️ Tips & Mistakes to Avoid

• Ensure conditions are in correct order (most specific to least)
• Don't forget to use curly braces { }
• Only the first true condition runs

📌 Summary

The if-else if ladder is useful when you need to test several possible conditions. It improves code readability and logic flow in programs.

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