﻿ Homework

Due Mar 25

## Assembly Language Programs

### Problem 1

Write an assembly language program that has two variables (n1 and n2). If n1 is greater than n2, then the program swaps the values of the two variables (so the smaller value always ends up in n1). Use constants (c1 and c2) to initialize the values of n1 and n2. Here is the basic logic:

```final int C1 = 10;
final int C2 = 20;

int n1, n2;

n1 = C1;
n2 = C2;
if (n1 > n2)
{
swap n1 and n2;
}```

I should be able to modify your program by entering different values for c1 and c2 and your program should still work correctly. Submit your program as "H10P1.JAS".

### Problem 2

Write a program that has two methods named quotient and remainder. The quotient function has two non-negative parameters and returns the integer quotient found by dividing the first parameter by the second. The remainder function has two non-negative parameters and returns the remainder that would be left after dividing the first parameter by the second.

To find the quotient, subtract the second parameter (the divisor) from the first (the dividend) until the result is less than the divisor. The number of subtractions performed is the quotient and the final difference (the one that is less than the divisor) is the remainder. Consider 10 divided by 3; 3 can be subtracted 3 times before the result (1) is less than the divisor (3). The quotient is 3 and the remainder is 1:

```10 - 3 = 7
7 - 3 = 4
4 - 3 = 1```

Don't forget that the quotient is 0 if the dividend is less than the divisor in the first place. In that case, the remainder is the dividend. For example 3 divided by 10 has a quotient of 0 and a remainder of 3.

Declare the divisor and dividend as constants. Declare variables to store the quotient and remainder. Here is the basic logic of main:

```final int DIVIDEND = 10;
final int DIVISOR = 3;

int q, r;

q = quotient(DIVIDEND, DIVISOR);
r = remainder(DIVIDEND, DIVISOR);```

I should be able to modify the values of the dividend and divisor and get the correct quotient and remainder. Submit your program as "H10P2.JAS".