Use elseif inside a case switch. What is Wrong with my code? Only the first "if" case only works none of the elseif work?? Please any advice would help.

    clc
    clear all
    disp ('Cody,Ward')
    disp ('EG167, 07')
    disp('Assignment #12')
    disp('   ')
    disp ('Problem: #21')
    disp('  ')
    rp=input('What is the rental period for the car (days): ');
    cartype=input('What type of car class (B, C, D) ?: ','s');
    switch cartype
        case 'B'
                if (1<rp) && (rp<6);
                cost=rp*27;
                fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif rp==7;
                    n=162
                    cost=n
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif (7<rp) && (rp<27);
                    n=rp-7;
                    cost=162+(n*25);
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif rp==28;
                    n=662;
                    cost=n;
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                elseif (28<rp) && (rp<=60);
                    n=rp-28;
                    cost=662+(n*23);
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                else rp>60;
                    fprintf('\nRental is not available for more than 60 days.\n\n')
                end
        case 'C'
                if (1<rp) && (rp<6);
                cost=rp*34;
                fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif rp==7;
                    n=204
                    cost=n
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif (7<rp) && (rp<27);
                    n=rp-7;
                    cost=162+(n*31);
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif rp==28;
                    n=824;
                    cost=n;
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                elseif (28<rp) && (rp<=60);
                    n=rp-28;
                    cost=824+(n*28);
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                else rp>60;
                    fprintf('\nRental is not available for more than 60 days.\n\n')
                end
        case 'D'
                if (1<rp) && (rp<6);
                fprintf('\nClass D cannot be rented for less than 7 days.\n\n')
                elseif rp==7;
                    n=276
                    cost=n
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif (7<rp) && (rp<27);
                    n=rp-7;
                    cost=204+(n*31);
                    fprintf('\nThe car rental cost is $%3.2f.\n\n',cost')
                elseif rp==28;
                    n=1136;
                    cost=n;
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                elseif (28<rp) && (rp<=60);
                    n=rp-28;
                    cost=1136+(n*28);
                    fprintf('\nThe rental cost is $%3.2f.\n\n',cost')
                else rp>60;
                    fprintf('\nRental is not available for more than 60 days.\n\n')
                end
    end

Answer 1

[Teja Muppirala]

x = 0.1;
if  0 < x < 0.2
  disp('hello')
end

This sort of "IF" test does not work in MATLAB.

What happens is it first checks (0 < x)? --> true (=1)

Then (1 < 0.2)? --> false

Instead you have to write out both conditions like this:

x = 0.1;
if  (0 < x) && (x < 0.2)
  disp('hello')
end

[Paulo Silva]

good catch, I didn't notice that one :)

[Cody]

Perfect

Works great

Thanks Teja and Paulo

Can you point to where this is in the help menu?

[Teja Muppirala]

>> doc if

Or

Just for more general information,

Help -> MATLAB -> Getting Started -> Programming

Answer 2

[Paulo Silva]

This condition

elseif 7<rp<=27;

is valid for rp=27 so why do you have this one

elseif rp==27;

after it?

[Cody]

Thanks, Paulo

I fixed that part and the other conditions. But it still only uses the first if for each case.

Any other Ideas?

[Cody]

I revised the code

[Paulo Silva]

you still need to fix the code for the error that Teja found, even in the elseif lines you still got the error.

[Cody]

Thank you again.

I reposted the final code I'm going to run some final tests yet.

[Paulo Silva]

you also don't need to put ; in the if and elseif

[Cody]

Not following what you mean?

[Paulo Silva]

if (1<rp) && (rp<6); -> if (1<rp) && (rp<6)