In this tutorial, we will learn about if-else statements in C#. We will cover the basics of conditional execution using if-else statements.
An if-else statement is a conditional statement that executes one block of code if a specified condition is true, and another block of code if the condition is false.
The syntax for the if-else statement in C# is:
if (condition)
{
// Code block to execute if condition is true
}
else
{
// Code block to execute if condition is false
}
The if-else statement evaluates the specified condition. If the condition is true, the code block inside the if statement is executed; otherwise, the code block inside the else statement is executed.
num
.num
.num
is even or odd.num
is even or odd.using System;
class Program
{
static void Main()
{
int num = 10;
if (num % 2 == 0)
{
Console.WriteLine($"{num} is even.");
}
else
{
Console.WriteLine($"{num} is odd.");
}
}
}
10 is even.
str
.str
.str
starts with a specific value.using System;
class Program
{
static void Main()
{
string str = "Hello, world!";
if (str.StartsWith("Hello"))
{
Console.WriteLine("String starts with 'Hello'.");
}
else
{
Console.WriteLine("String does not start with 'Hello'.");
}
}
}
String starts with 'Hello'.
num
.num
.num
is positive or negative.num
is positive or negative.using System;
class Program
{
static void Main()
{
int num = -5;
if (num > 0)
{
Console.WriteLine($"{num} is positive.");
}
else
{
Console.WriteLine($"{num} is negative or zero.");
}
}
}
-5 is negative or zero.