if-Else if Conditional Statement
The if-else if statement allows for multiple conditions to be checked in sequence. If the if condition is false, the program checks the next else if condition, and so on.
Syntax of If-Else if Conditional Statement:
if (condition1) {
// code to execute if condition1 is true
} else if (condition2) {
// code to execute if condition2 is true
} else {
// code to execute if all conditions are false
}
In else if statements, the conditions are checked from the top-down, if the first block returns true, the second and the third blocks will not be checked, but if the first if block returns false, the second block will be checked. This checking continues until a block returns a true outcome.
Use Cases of If-Elif-Else Conditional Statement:
- Handling multiple conditions sequentially.
- Implementing multi-way decision logic.
Applications of If-Elif-Else Conditional Statement:
- Implementing menu selection logic.
- Categorizing data based on multiple criteria.
Advantages of If-Elif-Else Conditional Statement:
- Allows handling multiple conditions in a structured manner.
- Reduces the need for nested if-else statements.
Disadvantages of If-Elif-Else Conditional Statement:
- Can become lengthy and harder to maintain with many conditions.
- The order of conditions matters; incorrect ordering can lead to unexpected behavior.
If-Else if Conditional Statement Implementation:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int x = 0;
if (x > 0) {
cout << "x is positive";
}
else if (x < 0) {
cout << "x is not positive";
}
else {
cout << "x is not zero";
}
return 0;
}
public class Main {
public static void GFG(int x) {
// Check if the number is positive
if (x > 0) {
System.out.println("x is positive");
}
// Check if the number is negative
else if (x < 0) {
System.out.println("x is not positive");
}
// If the number is neither positive nor negative
// it must be zero
else {
System.out.println("x is not zero");
}
}
public static void main(String[] args) {
// Test the function with the sample number
int x = 0;
GFG(x);
}
}
def GFG(x):
# Check if the number is positive
if x > 0:
print("x is positive")
# Check if the number is negative
elif x < 0:
print("x is not positive")
# If the number is neither positive nor negative
# it must be zero
else:
print("x is not zero")
# Test the function with the sample number
x = 0
GFG(x)
let x = 0;
// Check if the number is positive
if (x > 0) {
console.log("x is positive");
}
// If not positive, check if the number is negative
else if (x < 0) {
console.log("x is not positive");
}
// If neither positive nor negative
// the number is zero
else {
console.log("x is not zero");
}
Output
x is not zero
Conditional Statements in Programming | Definition, Types, Best Practices
Conditional statements in programming are used to control the flow of a program based on certain conditions. These statements allow the execution of different code blocks depending on whether a specified condition evaluates to true or false, providing a fundamental mechanism for decision-making in algorithms. In this article, we will learn about the basics of Conditional Statements along with their different types.
Table of Content
- What are Conditional Statements in Programming?
- 5 Types of Conditional Statements
- 1. If Conditional Statement:
- 2. If-Else Conditional Statement:
- 3. if-Else if Conditional Statement:
- 4. Switch Conditional Statement:
- 5. Ternary Expression Conditional Statement:
- Difference between Types of Conditional Statements in Programming:
- Difference between If Else and Switch Case
- Best Practices for Conditional Statement
- Frequently Asked Questions FAQs in Conditional Statements