HOW TO WRITE MAIN FUNCTION

Getting down to bussiness;

I have written "TWO separate" functons on matlab that calculates: 1) the area of triangle 2) the area of a parallelogram

But I want to create an M-function that will calculate the area of a triangle or a parallelogram by asking the user to make a choice between Triangle and Parallelogram and then compute the area by calling the right funtion.

%-------------AREA OF TRIANGLE FUNCTION--------------------------------------------------------%;

• function [ points ] = coordinateS( x_1,y_1,x_2,y_2,x_3,y_3 )

*x_1=input('Enter the coordinates (x_1), :' ) *y_1=input('Enter the coordinates (y_1), :' )

*x_2=input('Enter the coordinates (x_2), :' ) *y_2=input('Enter the coordinates (y_2), :' )

*x_3=input('Enter the coordinates (x_3), :' ) *y_3=input('Enter the coordinates (y_3), :' )

*M = [x_1 y_1 1; x_2 y_2 1; x_3 y_3 1]

*% Calculate Area of Triangle (areaT) *Area = [(0.5)*abs(det(M))]

%-------------AREA OF PARALLELOGRAM FUNCTION-------------------------------------------%

• function [ points ] = coordinateS( x_1,y_1,x_2,y_2,x_3,y_3,x_4,y_4 )

*x_1=input('Enter the coordinates (x_1), :' ) *y_1=input('Enter the coordinates (y_1), :' )

*x_2=input('Enter the coordinates (x_2), :' ) *y_2=input('Enter the coordinates (y_2), :' )

*x_3=input('Enter the coordinates (x_3), :' ) *y_3=input('Enter the coordinates (y_3), :' )

*x_4=input('Enter the coordinates (x_4), :' ) *y_4=input('Enter the coordinates (y_4), :' )

*M = [x_1 y_1 1; x_2 y_2 1; x_3 y_3 1]

*% Calculate Area of PARALLELOGRAM (areaP) *Area = [abs(det(M))]

%--------------------------------------------------------------------------------------------------------------%

How do i write another funtion that will take user input (from the keyboard). That will calculate the area of a triangle or a parallelogram by asking the user to make a choice between Triangle and Parallelogram and then compute the area by calling the right funtion.

Answer 1

[Star Strider]

The ‘function’ you want to write is called a ‘script’ in MATLAB. See Programming Scripts and Functions for details.

[ASIM]

thanks, I will look into it.

My question is understandable, right? I mean the above one.

[Star Strider]

My pleasure.

I believe so. If I understand you correctly, you want to write a script, and that link should define the difference between scripts and functions.