IF Conditions in Programming Languages

Question

In this post, we're gonna learn how to write the different types of IF Conditions in

• Python,
• C#,
• Java.

You may be also interested to check  Loops in Programming languages

Before we getting started, let's first know more about Conditions

What're Conditions?

• Conditions are a decision-making statement.
• Perform different actions depending on a boolean condition that may be true or false.

Conditions Type

• If statement: is used to specify a block of code to be executed, if a specified condition is true.
• If - else statement: is used to specify a new condition to test, if the first condition is false then it will be redirected to the else part.
• Logical conditions: Are features of programming languages "conditional statement", we will list them below:-
  •  Less than: a < b
  •  Less than or equal to: a <= b
  • Greater than: a > b
  • Greater than or equal to: a >= b
  • Equal to a == b
  • Not Equal to: a != b

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Condition In C#

• IF Statement.
• IF-ELSE statement.
• ELSE-IF Statement.

C# If statement

•  Use the if statement to specify a block of C# code to be executed if a condition is True.
• The syntax of  if  statement in C# is:

if (condition) 
{
  // block of code to be executed if the condition is True
} 

C# If – else  Statement

• An if statement can be followed by an optional else statement, which executes when the first condition is FALSE.
• The syntax of If – else  in C# is:

if (condition)
{
  // block of code to be executed if the condition is True
} 
Else
{
// block of code to be executed if the condition is True 
}

C# Else if  Statement

• Use the else if statement to specify a new condition if the first condition is False.
• The syntax of  else if  statement in C# is                                  

if (condition1)

{
  // block of code to be executed if condition1 is True
} 

else if (condition2) 

{
  // block of code to be executed if the condition1 is false and condition2 is True
} 

else

{
  // block of code to be executed if the condition1 is false and condition2 is False
}

---

Conditions In Python

• IF Statement
• IF-ELSE Statement
• ELIF Statement

Python If Statement

• Use the if statement to specify a block of C# code to be executed if a condition is True.
• (white space at the beginning of a line) to define the scope in the code
• The syntax of  if  statement in python  is

if condition  
#block of code to be executed if the condition is True

Python (If–else) Statement

• An if statement can be followed by an optional else statement, which executes when the first condition is FALSE.
• (white space at the beginning of a line) to define the scope in the code of if and else
• The syntax of If – else  in Python is:

if condition

 #block of code to be executed if the condition is True

else 

  # block of code to be executed if the condition is False

Python Elif statement

• The elif keyword in pythons is the way of saying "if the previous conditions were not true, then try this condition". 
• Also, make sure that the white space at the beginning of a line is to define the scope in the code of if and Elif.
• The syntax of If – else in Python is:

if condition
#block of code to be executed if the condition is True 
Elif condition 
# block of code to be executed if the condition is False

---

Conditions In Java

• IF Statement
• IF-ELSE Statement
• ELSE-IF Statement

Java If Statement

• Use the if statement to specify a block of C# code to be executed if a condition is True.
• The syntax of  if  statement in java is: 

if(condition)  {
// block of code to be executed if the condition is True
}

Java (If-else) Statement

• An if statement can be followed by an optional else statement, which executes when the first condition is FALSE.
• The syntax of If – else  in C# is

if (condition)
{
  // block of code to be executed if the condition is True
}
else

{
  //block of code to be executed if the condition is false
}

Java else if Statement

• Like other programming languages the else if statement in java is to specify a new condition if the first condition is False.
• The syntax of  else if  statement in Java is

if (condition1)

{
  // block of code to be executed if condition1 is True 
} 

else if (condition2) 

{ 
// block of code to be executed if the condition1 is false and condition2 is true
 } 

else 

{
 // block of code to be executed if the condition1 is false and condition2 is False
 } 

---

Conclusion

In this post, we have learned how to write different Conditions in C#, Python, and Java programming language.

See Also

• Loops in Programming languages
• Comments in Programming Languages