Conditional Statements

Conditional Statements

• It is used to these are statements within our program which are conditionally executed.
• To conditionally execute statements Python provides us different control structures and operators.
• if statement
• Single-line if statement
• match…case statement

if...else Statements

• If condition is true then statements within if block are executed and then program control is transferred to next statements.
• If condition is false then statements within else block are executed and then program control is transferred to next statements.

if condition:
  Statements
  ----------
else:
  Statements
  ----------
next statements

Boolean expressions

• Condition can be specified by using a Boolean expression i.e. an expression whose result is True or False.
• Boolean expression can be created by using relational and logical operators. A Boolean expression is just another name for a conditional test. A Boolean value is either True or False, just like the value of a conditional expression after it has been evaluated.
• Relational Operators: < , > , <= , >= , == , !=
• Logical Operators: and , or , not

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#Write a Program to read a number and check if it is an even or odd.

a=input("Enter a Number ")
a=int(a)
if a%2==0:
  print("Number is Even")
else:
  print("Number is Odd")

Enter a Number: 24
Number is EVEN

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#Write a Program to read 3 angles and check if triangle can be formed or not.

a,b,c=input("Enter 3 Angles").split()
a,b,c=int(a),int(b),int(c)
if a+b+c==180 :
  print("Triangle can be formed")
else:
  print("Triangle can not be formed")

Enter 3 Angles: 30 100 50
Triangle can be formed

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#Write a Program tto read a no. and check if it is a 2 digit no or not.

a=input("Enter a Number: ")
a=int(a)
if a>=10 and a<=99:
  print("2 digit Number")
else:
  print("Not a 2 digit Number")

Enter a no.: 15
2 digit Number

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#Write a Program to read a no. and check if it is a 2 digit no or not. If it is a 2 digit number then find sum of its digits.

a=input("Enter a Number: ")
a=int(a)
if a>=10 and a<=99:
  print("2 digit Number")
  x=a%10
  y=a//10
  s=x+y
  print("Sum of digits is ",s)
else:
  print("Not a 2 digit Number")

Enter a no.: 15
2 digit Number
Sum of digit is 6

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