Create a C program to calculate the area of a rectangle is length x width, triangle is $0\mathrm{.}5$ x length x base and circle is pi x radius x radius. The program should continue to prompt for a selection until the choice to quit is selected. A constant will be used to store the pi with a value of $3\mathrm{.}14159265358979323846$ to be used to find the area of a circle.

Program Requirements

$1.$ The program should prompt the user to select the shape.

$2.$ After choice selected, prompt the user to enter the measurements.

$3.$ Input the information using 'scanf' and print the results of the calculation 'printf'.

$4.$ All your code should be contained in the main$()$ function of your program.

$*****$ No functions should be used. Points deduction for using functions. $*****$

Input Requirements

$1.$ All of the input should be real numbers. $($float$)$

$2.$ The input value should not be below $0\mathrm{.}0.$

$3.$ Invalid input should be followed with descriptive messages of expected input parameters.

Output Requirements

$1.$ All output should send to standard output.

$2.$ The output from the calculations should be descriptive.

$3.$ The output should always be formatted with two decimal points.