Write a NASM program that:

1. Prompts the user to enter a string of up to 50 chars.

2. Echoes the original string back to the user

3. Capitalizes all letters and echo it back

4. Lower case all letters and echo it back

Be sure your program outputs appropriate messages, spaces, and newline chars as the output is produced.

You may want to check out the ASCII table for upper and lower case character values.

Commands to assemble and execute your program:

nasm -f elf asg5-userName.asm

(assembles asg5-userName.asm into asg5-userName.o)

ld -m elf_i386 asg5-userName.o -o asg5-userName

(links asg5-userName.o into an executable file named a.out which then is redirected to asg5-userName )

./asg5-userName

(executes the program asg5-userName created by the linker)

// userName is zabualsa