Question

USING MatLab (Arrays)

1. Set ASIZE to 5. Write a program that creates an array of ASIZE numeric elements. Prompt the User for ASIZE numbers and store them in the array. After storing the values, calculate the sum of all the values in the array and display the sum.
2. Modify the program you wrote for Problem 5 such that it calculates the product of all the values instead of the sum.
3. Modify the program you wrote in Problem 6 such that it changes the value of each element of the array by multiplying each element of the array by 2, and then displays each element of the array.

Answer 1

This is a fairly simple problem for arrays in MATLAB. The code for the question with comments is given below -

%Set ASIZE to 5
ASIZE = 5;

%Create array of size ASIZE
arr = zeros(1,ASIZE);

for i=1:ASIZE
    arr(i) = input('Enter value: ');
end

%Sum of all array elements
arraySum = sum(arr)

%Product of all array elements
arrayProduct = prod(arr)

%New array by doubling all array elements
newArr = arr*2

This code is for all the parts. You can remove any statement if you want to cater to your question.

The MATLAB inbuilt functions sum and prod are used to calculate the sum and product of the array elements. Multiplying the array with 2 directly doubles all the values of the array.

Code Screenshot -

OUTPUT Screenshot -