Loops (While, Do..While, For)
Q1) Write a C program to print numbers from 0 to 100. (You are required to write 3 separate answers each using While, Do..While, For, looping structures).
Q2) Write a C program to calculate and print the total of 10 marks and the average. If the average is less than 50 program should print “Fail!” otherwise “Pass!”
Q3) Write a C program to calculate factorial of a user given number.
Hint:
• Select an appropriate looping structure.
• Factorial of ‘0’ is ‘1’ (0! = 1)
• Ex: factorial of number 5 is calculated as 5! = 5*4*3*2*1

Q4) Write a C program to calculate the sum of all digits of a user given number.
• If user input 123 your program should output 6. (calculated as 1+2+3)
Q5) Write a C program to reverse the digits of a number using do-while statement.
Q6) Write a C program to calculate nth power of a given integer. The user input base and exponent. (Do NOT use inbuilt functions, instead use a loop)
Q7) Write a C program to print first 10 numbers of “Fibonacci Sequence”.
Q8) Write a C program to check whether a given number is an Armstrong Number! (Refer to previous flowcharts)
Q9) Write a C program to print all the ASCII values for letters A to Z.
Q10) Write a program to print this pattern.
*
**
***
****
*****
Q11) Write a program to check whether a given number is prime or not.
Q12) Write a C program to print all factors of a given integer.
Q12) Write a C program to add all user inputs until user input ‘-1’. And then display the sum.
Q13) Write a C program to read user inputs for an integer array (size = 10) and print the array.
Q14) Re-Write the above code to count all the even numbers in above integer array and display the count.