1. CSCE 206 Lab Structured Programming in C
SPRING 2019
Lecture 5

2. Function Block of code to perform a specific task
A large problem can be solved using different functions
User defined functions can take different parameters and return a result, which can be used in the main function
Example: pow(base, exponent)takes 2 parameters as input and returns a result. It is a built-in function from math.h, not user-defined.

3. Function Syntax returnType functionName(type1 argument1,{
// Body of the function }

4. Function Calling

5. Practice Problem-1
Write a program that reads in an integer value for n and then sums the integers from n to 2*n if n is nonnegative, or from 2 * n to n if n is negative.
Use function for the summation of series.

6. Practice Problem-2
Write a program that prints all the prime numbers from 2 to
Use function to check whether a number is prime or not.

7. Practice Problem-3
Write a program that takes an integer n from the input and,
If n is negative: make it positive, add 5 and print it.
If n is divisible by 2: print the next 10 numbers.
If n is divisible by 3: print the number of digits of n.
Hint: you will need a loop.
Use one function for each if case.

8. Practice Problem-4
Write a program that takes an integer n from the input and print if the number is a palindrome.
Use one function.

9. Practice Problem-5
Write a program that takes an integer n from the input and print if the number is a palindrome.
Use one function. Use recursion.