Python Program - Find Largest Number among three Numbers


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Three numbers $$x$$, $$y$$ and $$z$$ are given and the largest number among these three numbers can be found out using below methods.

Example: Using If statement

In the below example, only if conditional statements are used.

def largest(x, y, z):
  if x >= y and x >= z:
    max = x
  if y >= x and y >= z:
    max = y
  if z >= x and z >= y:
    max = z
  print("largest number among", x,",", y,"and",z,"is: ",max)

largest(100, 50, 25)
largest(50, 50, 25)

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using If-else statement

It can also be solved using If-else conditional statements.

def largest(x, y, z):
  if x >= y and x >= z:
    max = x
  elif y >= x and y >= z:
    max = y
  else:
    max = z
  print("largest number among", x,",", y,"and",z,"is: ",max)

largest(100, 50, 25)
largest(50, 50, 25)

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using Nested If-else statement

The above problem can also be solved using nested if-else conditional statements.

def largest(x, y, z):
  if x >= y:
    if x >= z:
      max = x
    else:
      max = z
  else:
    if y >= z:
      max = y
    else:
      max = z  
  print("largest number among", x,",", y,"and",z,"is: ",max)

largest(100, 50, 25)
largest(50, 50, 25)

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50

Example: Using Short hand If-else statement

Short hand if-else conditional statements can also be used here.

def largest(x, y, z):
  max = x if x > y else y if y > z else z  
  print("largest number among", x,",", y,"and",z,"is: ",max)

largest(100, 50, 25)
largest(50, 50, 25)

Output

largest number among 100 , 50 and 25 is:  100
largest number among 50 , 50 and 25 is:  50




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