Question $1(50$ marks$)$

A motor start$-$stop control system is designed to operate as follows:

$1.$ If the ON switch $($normally opened push button switch$)$ is pressed, the motor starts running.

$2.$ If the OFF switch $($normally opened push button switch$)$ is pressed, a stop relay energizes and causes the motor stops running.

$3.$ When overload or over$-$temperature occurs, the motor stops running.

$4.$ If the motor is running after $($i$),$ the motor continues running if $($ii$),($iii$)$ and $($iv$)$ are FALSE.

$5.$ Repeat $(1).$

$($a$)$ Write the pseudo$-$code to illustrate the program flow.

$($b$)$ Draw the flowchart to illustrate the program flow.

$($c$)$ Write a C program to illustrate the control system.