PLease help with C$++$

By using the polling procedure described in step $5,$ you can obtain the row and column

location of a key press, which can be used to access elements of a char array that

mimics the keypad layout. See an example char array structure below. Note that array

index values start at $0,$ so key$\_$map $[0][0]$ is $\text{'}1\text{'},$ key$\_$map $[1][2]$ is $\text{'}{6}^{\text{'}},$ and so on$.$

Use the polling procedure of step $5$ and char array of step $6$ to detect and locate a key

press and then access the correct character from the char array. Output this character

to the terminal using a printe or cout statement.

You can create your program in any way you see fit. However, I recommend that you

use a structured hierarchical approach. One way to do this is create a function, that uses

the polling procedure to return the character pressed by the keypad when called in the

main $()$ function. An example function declaration could be

char keypad$\_$scan$($void$)$;

This function could also call a function that reads the state of the input columns to

determine the column index of the key pressed. An example function declaration could

be int col$\_$scan$($woid$)$;

Read Five$-$Character Sequence and Turn LEDI on if Code Match

Modify the program you created in the previous procedure to read a five$-$character

sequence. If the sequence matches the code $2753$# then turn LED$1$ on$.$ If not,

LED$1$ remains off.

If LED$1$ is on$,$ add to the program instructions that will turn LED$1$ off when $*$ is pressed.

You may find including the $+===$