Learning outcome: assess student$$s ability to:

Create a $2$D array in a program.

Access data in a $2$D array.

Define functions with the application of $2$D array.

Generate and use random numbers.

Activity description: sum of all numbers that are multiple of three in each COLUMN of a $7-$by$-7$ matrix $(2$D array$).$

Create a program that will sum all numbers that are multiple of three in each COLUMN of a $2-$dimension array. The program will:

Set the size of an array as a global constant variable with value of $7.$

define function numbers$\_$random$().$ Function numbers$\_$random$()$ is used to randomly generate a value between $-25$ and $25$ and return the value as an integer.

Define function populate$\_$numbers$().$ Function populate$\_$ numbers$()$ is used to populate the $7-$by$-7$ matrix. It means that each cell of the $7$ rows and $7$ columns will be populated with one random number. This random number is obtained by using function numbers$\_$random$().$

define function print$\_$number$().$ Function print$\_$number$()$ is used to print the value in each cell of the $7-$by$-7$ array.

define function sum$\_$mult$3\_$col$().$ Function sum$\_$mult$3\_$col$()$ is used to sum all numbers that are multiple of $3$ in each COLUMN of a $7-$by$-7$ array.

Define function prompt$\_$sum$\_$mult$3\_$col$().$ The function is used to print the result of the sums as:

Sum all numbers that are multiple of three in column $1=\_\_\_\_$

Sum all numbers that are multiple of three in column $2=\_\_\_\_$

Sum all numbers that are multiple of three in column $3=\_\_\_\_$