While loop in Python

Hello friends how are you, today in this blog i will teach you what is while loop, syntax of while loop , how while loop works and many programs using while loop in a very simple way. 

Let's start

Syntax of while loop:

while condition:
    body of loop

• It's body will execute until the given condition is true.

Example:

i=1
while i<=10:
    print(i)
    i=i+1
/*
1
2
3
4
5
6
7
8
9
10
*/

Example 2: Find factorial of any number

/*
factorial of 5=1x2x3x4x5
factorial of 6=1x2x3x4x5x6
factorial of N=1x2x3x....xN
*/
i=1
fact=1
no=int(input("Enter any number:"))
while i<=no:
    fact=fact*i
    i=i+1
print("Factorial of ",no," is ",fact)
/*
Enter any number:6
Factorial of  6  is  716
*/

Example: While loop with else

• When the condition of while fails then the else part is executed.

i=1
while i<=5:
    print(i)
    i=i+1
else:
    print("This is else part")
/*
1
2
3
4
5
This is else part
*/

Else part is ignored when break statement terminate the loop

i=1
while i<=5:
    if i==3:
        break
    print(i)
    i=i+1
else:
    print("This is else part")
/*
1
2
because when i will become 3
break will terminate the loop
*/

While loop with string

str="Easy"
i=0
while i < len(str):
    print(str[i])
    i=i+1
/*
E
a
s
y
*/

While loop with list

girls=["Ritu","Ajeeta","Sonali"]
i=0
while i < len(girls):
    print(girls[i])
    i=i+1
/*
Ritu
Bulbul
Sonali
*/

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