Explain different types of user defined functions used in C program using appropriate algorithms and flowcharts.

Write a C program to find the areas of a circle, a triangle, a square and a rectangle using four different types of user defined functions.

Describe the general form of a simple C program that includes at least directives, functions and statements.

Explain different types of IF statements used in C using appropriate statements and flow charts.

Suppose a man (say, A) stands at (0, 0) and waits for user to give him the direction and distance to go. User may enter N E W S for north, east, west, south, and any value for distance. When user enters 0 as direction, stop and print out the location where the man stopped.

When is it better to use switch statement in a C program? Using switch statement, write a C program to calculate your grade of any course.

Explain different types of functions with an example of each.

Using function, write a C program to find the largest value among three values which are passed as arguments using the call by reference method.