Question $4(15\%)$: Write a program that defines a byte array, called String$1,$ with a size of $10$ bytes. ReadString PROC

Reads a string of up to ECX non$-$null characters from standard input, stopping when the user presses the Enter key.

A null byte is stored following the characters input, but the trailing carriage return and line feed characters are not placed into the buffer.

ECX should always be smaller than the buffer size $($never equal to the buffer size$)$ because the null byte could be the $($ECX $+1)$th characte

stored.

Call args: EDX points to the input buffer

ECX max number of non$-$null chars to read

Return arg: EAX $=$ size of input string.

Example:

$.$data

MAX $=80,$;max chars to read

stringIn BYTE MAX$+1$ DUP $(?)$ ;room for null

$.$code

mov edx,OFFSET stringIn

mov ecx,MAX ;buffer size $-1$

call ReadString

The program should read a string from the keyboard $($all characters are small letters, and the maximum

number of characters is $9)$ using the Irvine ReadString procedure and store the string in String$1.$ The

program should capitalize the first three letters of the string and print the modified string using the

Irvine WriteString. You need to use the "direct$-$offset operand" address mode $($Topic $4-$part $1)$ to

answer this question. Below please find a sample of the expect output of the program.

Hint: below is the explanation of the ReadString procedure.