Control flow: while loop

Instructor: Applied AI Course Duration: 16 mins

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python while loop statement:

As many people are asking questions about prime numbers program, please check this one

p = 10

q = 16

# we will keep checking every number starting from p to q

for i in range(p, q):

print("we are checking ", i, "is prime or not")

# we assume that i is not divisible by any number except 1 and i

is_i_divisble_by_any_number = False

# now, we will start searching for a number that devides i in range 2, i

for j in range(2, i):

# lets check if j devides i or not

if i % j == 0:

# since there exist a number j that devides i, our assumption is wrong

# so we are setting is_i_divisble_by_any_number = True

is_i_divisble_by_any_number = True

print(" the number ", j, "devides ", i)

# since we got the number, so we proved that its not a prime numer

# so we will break it

break

# if our assumption still holds even after the search in range(2, i)

# we declare i as prime number

if is_i_divisble_by_any_number == False:

print(i, "is a prime number")

else:

print(i, "is not a prime number")

print("="*50)

Output of the of the code

we are checking 10 is prime or not

the number 2 devides 10

10 is not a prime number

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we are checking 11 is prime or not

11 is a prime number

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we are checking 12 is prime or not

the number 2 devides 12

12 is not a prime number

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we are checking 13 is prime or not

13 is a prime number

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we are checking 14 is prime or not

the number 2 devides 14

14 is not a prime number

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we are checking 15 is prime or not

the number 3 devides 15

15 is not a prime number

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