Question

Write MARIE code to perform the following pseudocode excerpt, with an explanation of each instruction in your code beside it.

Input a value for x
if(x > y)
max= x
else
max=y
Output the value of max

Answer 1

The code provided is a MARIE assembly language representation for comparing two values and outputting the maximum using conditional logic and jumps.

Step-by-step explanation:

The student is asking for MARIE assembly language code equivalent to a given pseudocode that compares two numbers and prints the larger one. Below is the MARIE code with explanations:

Load y // Load the value of y into the accumulator
Subtract x // Subtract x from y; result will be negative if x > y
Skipcond 800 // Skip next instruction if accumulator is negative (meaning x > y)
Load y // If x ≤ y, load y into the accumulator as the max value
Jump Output // Skip the next instructions and jump to Output
Load x // If x > y, load x into the accumulator as the max value
Output: // Label for the output
Output // Output the value in the accumulator
Halt // Stop the program

Each instruction is explained next to the respective line of code, illustrating the steps to determine the maximum value (max) between two numbers x and y and output it.