🧪 if Condition in C

🔍 if Condition in C Programming

📘 Short Explanation: In C, the if statement is used to make decisions. It checks a condition—if it's true, the code inside runs. Otherwise, it’s skipped. It helps control the program’s flow based on logic and input.

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✅ Basic Syntax

if (condition) {
    // code to execute if condition is true
}
  

🧪 Example: Simple if Statement

#include <stdio.h>

int main() {
    int age = 20;

    if (age >= 18) {
        printf("You are eligible to vote.\n");
    }

    return 0;
}
  

🧠 Output: You are eligible to vote.

🔁 if-else Syntax

if (condition) {
    // runs if true
} else {
    // runs if false
}
  

📋 Example:

int number = 5;

if (number % 2 == 0) {
    printf("Even number\n");
} else {
    printf("Odd number\n");
}
  

🔗 if-else if-else Ladder

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

📋 Example:

int score = 85;

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

⚠️ Tips to Remember

• Use == for comparison, not =.
• The condition must return true (non-zero) or false (zero).
• You can use logical operators: && (AND), || (OR), ! (NOT).

📌 Summary

The if statement is the foundation of decision-making in C. It allows your program to respond to conditions, making it flexible and interactive. With if, else, and else if, you can cover all logic scenarios effectively.

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