# Loops Programs

1. WAP to read a number and print all numbers from 1 to that number
input: enter a number: 5
output:
1
2
3
4
5
2. WAP to read number and print all even numbers from 1 to that number
input: enter a number: 5
output:
2
4
3. WAP to print all number from 1 to 10 by using while, for and do -while loop.
4. WAP to read a number and find sum of all numbers from 1 to that number
input: enter a number: 5
output: 1 + 2 + 3 + 4 + 5 = 15
5. WAP to read a number and find factorial of that number
input: enter a number: 5
output: 1 * 2 * 3 * 4 * 5 = 120
6. WAP to read a number and find reverse of that number
input: enter a number: 1234
output: 4321
7. WAP to read a number and check if it is a prime number or not
input: enter a number: 5
output: 5 is a prime number
8. WAP to print all prime number in range from 1 to 100
output: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
9. WAP to print first 10 fibonacci number
output: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55
10. WAP to read a number and find sum of its digits
input: 12345
output: 1 + 2 + 3 + 4 + 5 = 15
11. WAP to find a 3 digit armstrong number
output: 153
12. WAP to print all armstrong numbers from 1 to 999
output: 153, 370, 371, 407
13. WAP to print ASCII chars and values from 1 to 255
14. WAP to print alphabets from A to Z using loop
15. WAP to read a number and count all numbers which divides the given number perfectly
16. WAP to read 2 numbers and print their common factors
17. WAP to read 2 numbers and print HCF
18. WAP to print factorial of all numbers from 1 to 10
19. WAP to read 2 numbers a and b and print all numbers from a to b
20. WAP to repeatedly read a number until it is in range from 10 to 20
21. WAP to read a number and print all numbers which divides the given number perfectly
22. WAP to find sum of series
S = 1 + 2 + 3 + …. + N
23. WAP to find sum of series
S = 1 + 2! + 3! + …. N!
24. WAP to find sum of series
S = 1 + 1/2 + 1/3 + 1/4 + 1/5 + …. + 1/N
25. WAP to find sum of series
S = 1 – 1/2 + 1/3 – 1/4 + 1/5 – …. 1/N
26. WAP to read a number and print tables from 1 to that number
27. WAP to print following output
• 12345
1234
123
12
1
• 54321
4321
321
21
1
• *****
****
***
**
*
• 1234554321
1234554321
1234554321
1234554321
1234554321
• 12345123451234512345
12345123451234512345
12345123451234512345
• ABCDE
ABCD
ABC
AB
A
• ABCDEFEDCBA
ABCDE EDCBA
ABCD   DCBA
ABC     CBA
AB       BA
A         A
• *********
*******
*****
***
*