Implement a MIPS assembly language program that defines main, readArray and remo
ID: 3876449 • Letter: I
Question
Implement a MIPS assembly language program that defines main, readArray and removeEvenOdd procedures.
The readArray takes an array of integers as its parameter, reads in integers from a user to fill the array and also print each value as long as it is with the number of elements specified by the parameter "howMany" and "length".
The removeEvenOdd procedure takes parameters of an array of integers, its length, and even value, an asks a user how many integers to read in and calls the readyArray procedure. Then it should go through the array to see if each number is even (divisible by 2) if the parameter even is 0. In that case, such even integer in the array is changed to 0. If the parameter even is 1, then it changes every odd integer in the array to 0. Then it prints out the updated content of the array.
The main procedure asks a user to specify whether to remove even or odd numbers by asking them to enter an integer. Then it calls the removeEvenOdd procedure. It repeats these two steps twice.
Please see the following C program to understand how it should work.
If your program causes an infinite loop, press Control and 'C' keys at the same time to stop it.
Name your source code file assignment6.s.
The following shows how it looks like in a C program:
The following is a sample output (user input is in bold):
Enter zero to remove even numbers or non-zero to remove odd numbers
0
Specify how many numbers should be stored in the array (at most 8):
8
Enter an integer:
1
Enter an integer:
-12
Enter an integer:
53
Enter an integer:
-4
Enter an integer:
5
Enter an integer:
32
Enter an integer:
1
Enter an integer:
7
The array content:
1
-12
53
-4
5
32
1
7
After removing even integers
1
1
53
1
5
1
1
7
Enter zero to remove even numbers or non-zero to remove odd numbers
1
Specify how many numbers should be stored in the array (at most 8):
5
Enter an integer:
1
Enter an integer:
-5
Enter an integer:
-2
Enter an integer:
3
Enter an integer:
2
The array content:
1
-5
-2
3
2
After removing odd integers
0
0
-2
0
2
--------------------------------------------------
What to turn in:
programs should be well commented.
Each procedure needs to have a header using the following format:
############################################################################
# Procedure readArray
# Description: -----
# parameters: $a0 = address of array
# return value: $v0 = length
# registers to be used: $s3 and $s4 will be used.
############################################################################
Explanation / Answer
############################################################################
# Procedure readArray
# Description:The readArray takes an array of integers as its parameter, reads in integers from a user to fill the array and also each element in the array.
# parameters: $a0 = address of array, length of array, howMany number stored in array
# return value: $v0 = length
# registers to be used: $s3 and $s4 will be used.
############################################################################
//The readArray procedure reads integers from user input
//and prints each element in the array
void readArray(int array[], int length, int howMany)
{
int num, i = 0;
printf("The array content: ");
while (i < howMany && i < length)
{
printf("Enter an integer: ");
//read an integer from a user input and store it in num1
scanf("%d", &num);
array[i] = num;
//print numbers
printf("%d ", array[i]);
i++;
}
return;
}
############################################################################
# Procedure removeEvenOdd
# Description: The removeEvenOdd sets each even integer in the array to 1, if the parameter "even" is 0, and sets each odd integer in the array to 0,
# if the parameter "even" is not 0.
# parameters: $a0 = address of array, length of array, even = 0 or 1
# return value: $v0 = length
# registers to be used: $s3 and $s4 will be used.
############################################################################
void removeEvenOdd(int array[], int length, int even)
{
int i = 0;
int howMany = 0;
printf("Specify how many numbers should be stored in the array (at most 8): ");
scanf("%d", &howMany); //read an integer from a user input and store it in &howMany
readArray(array, length, howMany);
while (i < howMany && i < length) // compare length of aaray and how many , i should not be exceed any of them
{
if (even == 0 && array[i]%2 == 0)
{
array[i] = 1;
}
else if (even != 0 && array[i]%2 != 0)
{
array[i] = 0;
}
i++;
}
if (even == 0)
printf("After removing even integers ");
else
printf("After removing odd integers ");
i = 0;
while (i < howMany && i < length)
{
printf("%d ", array[i]);
i++;
}
}
############################################################################
# Procedure main
# Description: The main procedure asks a user to specify whether to remove even or odd numbers by asking them to enter an integer.
# Then it calls the removeEvenOdd procedure. It repeats these two steps twice.
# parameters: none
# return value: $v0 = length
# registers to be used: $s3 and $s4 will be used.
############################################################################
void main()
{
int arraysize = 8; // size of array
int numbers[arraysize];
int i, even;
printf("Enter zero to remove even numbers or non-zero to remove odd numbers ");
scanf("%d", &even); // store user input in "even" either 0 or 1
removeEvenOdd(numbers, arraysize, even); // call function removeEvenOdd to remove even number or odd number
printf("Enter zero to remove even numbers or non-zero to remove odd numbers ");
scanf("%d", &even);
removeEvenOdd(numbers, arraysize, even); // call function removeEvenOdd to remove even number or odd number
return;
}
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