Real Time Example Program of For Loop

Definition of for loop :

A for loop in Python is used to iterate over a sequence (like a list, tuple, or range) and execute a block of code for each item in that sequence.

 

Real time example of for loop:


Question 1:

Write a Python program using a for loop to print numbers between two inputs, excluding the start and end.

Program:

start = int(input("Enter the starting number: "))
end = int(input("Enter the ending number: "))
for i in range(start + 1, end):
    print(i)

Output:

Start: 4
End: 14
5
6
7
8
9
10
11
12
13

Question 2 :

Print Even Numbers Between 1 to 10

Program:

start = int(input("Enter the starting number: "))
end = int(input("Enter the ending number: "))
for i in range(start, end + 1):
    if i % 2 == 0:
        print(i)

Output:

Enter the starting number: 1
Enter the ending number: 10
2
4
6
8
10

Question 3 : 

Print Odd Numbers Between 1 to 10

Program:

start = int(input("Enter the starting number: "))
end = int(input("Enter the ending number: "))
for i in range(start, end + 1):
    if i % 2 == 1:
        print(i)

Output:

Enter the starting number: 1
Enter the ending number: 10
1
3
5
7
9

Question 4 : 

Count odd and even numbers from 1 to 4 using a for loop, then print the counts.

Program:

even_count = 0
odd_count = 0
start = int(input("Enter the starting number: "))
end = int(input("Enter the ending number: "))
for i in range(start, end + 1):
    if i % 2 == 1:
        odd_count += 1
    else:
        even_count += 1
print(f"Odd count: {odd_count}")
print(f"Even count: {even_count}")

Output:

Enter the starting number: 1
Enter the ending number: 5
Odd count: 3
Even count: 2

Question 5 :

Count numbers divisible by 3 and 5 between two user inputs.


Program : 

# Get user input for the starting and ending range
start = int(input("Enter the starting number: "))
end = int(input("Enter the ending number: "))
count = 0
for i in range(start, end + 1):
    if i % 3 == 0 and i % 5 == 0:
        count += 1
print(f"Count of numbers divisible by 3 and 5 between {start} and {end}: {count}")

Output:

Enter the starting number: 1
Enter the ending number: 100
Count of numbers divisible by 3 and 5 between 1 and 100: 6