lecture-17.md

Lecture-17 While-loop,Practice Questions in Python

While-loop

while True :
    statements
if stopping condition :
    break

Example:

Write a program to Count the Number of Digits Present In a Number.

num=int(input("Enter Any number :"))
count=0
while num>0:
  num=num // 10
  count=count + 1
print("Total Digits =",count)

⚙️ Output:

Enter Any number :7121
Total Digits = 4

Example:

Write a program to Count the Number of Digits if number is 0 .

num=int(input("Enter Any number :"))
count=0
flag=1
while num>=0 and flag==1:
  num=num // 10
  count=count + 1
  if num==0:
   flag=0
print("Total Digits =",count)

⚙️ Output:

Enter Any number :0
Total Digits = 1

Example:

1Write a program to reversed the Present Number.

num=int(input("Enter Any number :"))
rev=0
while num>0:
  rem=num%10
  rev=(rev*10)+rem
  num=num // 10
print("Reversed number is :",rev)

⚙️ Output:

Enter Any number :58644
Reversed number is : 44685

Example:

Write a program to Print the Fibonacci sequence.

n=int(input("How many time do you want to print :"))
f=0
s=1
print(f ," , " , s ,end=(" "))
for i in range(n):
  num=f+s
  f=s
  s=num
  print(" , ",num)

⚙️ Output:

How many time do you want to print :5 0,1,1,2,3,5,8

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