undefined variable even with equal sign, tried to see if it was the () but no luck

if(n)>=(2)
    any(a(k)== 43)&&any(a(k)==32);
    XXXIIPBS = find(a==32);
    XLIIIPBS = find(a==43);
    PBS = (A(XXXIIPBS).*a(XXXIIPBS))+(A(XLIIIPBS).*(a(XLIIIPBS)));
end
    if (n)>=(3)
        any(a(k)==10)&&any(a(k)==21)&&any(a(k)==32);
        Xeggavosand = find(a==10);
        XXIeggavosand = find(a==21);
        XXXIIeggavosand = find(a==32);
               EVS = A(Xeggavosand).*a(Xeggavosand)+A(XXIeggavosand).*a(XXIeggavosand)+A(XXXIIeggavosand).*a(XXXIIeggavosand);

    end
            if (n)>= (4)
                any(a(k)==10)&&any(a(k)==54)&&any(a(k)==65)&&any(a(k)==76);
                any(a(k)==87)&&any(a(k)==98)&&any(a(k)==12)&&any(a(k)==34);
                LXXXVIISM = find(a==87);
                XIISM = find(a==12);
                XCVIIISM = find(a==98);
                XXXIVSM = find(a==34);
                SBSMO = (A(LXXXVIISM).*a(LXXXVIISM))+((A(XIISM).*a(XIISM)))+(A(XXXIVSM).*a(XXXIVSM))+(A(XCVIIISM).*a(XCVIIISM));
                Xom = find(a==10);
                LIV = find(a==54);
                LXV = find(a==65);
                LXXVI= find(a==76);
                OM = ((A(Xom).* a(Xom))+(A(LIV).*a(LIV))+(A(LXV).*a(LXV))+(A(LXXVI).*(a(LXXVI))));
            end
if PBS >= 107
    disp('Peanut Butter Sandwich: 1 Peanut butter jar, 2 slices of bread')
end
    if EVS >= 95
        disp('EGGAVOCADOSANDWICH: 1 egg, 1 avocado, 2 slices of bread')
    end
        if OM >= 215
           disp('Spinich Cheese Omlet: 2 eggs, 1 cup of spinach, 1/4 tbs of butter, 1 slice of cheese')
        end
           if SBSMO >= 318
              disp ('Strawberry Banna Smoothie: 2 cups of strawberries, 1 banana, 1 cup of milk, 1 cup of ice')
           end
disp('Recipes available to make are:')

my input is:

How many ingredients do you have? 2

Type code of Ingrediant #1: 32

Type quantity of Ingrediant #1: 4

Type code of Ingrediant #2: 43

Type quantity of Ingrediant #2: 1

Peanut Butter Sandwich: 1 Peanut butter jar, 2 slices of bread

Undefined function or variable 'EVS'.

Error in SFSU918374852_FinalProject (line 54)

if EVS >= 95

[Walter Roberson]

    any(a(k)== 43)&&any(a(k)==32);

That evaluates a condition, figuring out whether the condition is true or false. Then, it throws away the result of the expression. You are not testing the result, and you are not displaying the result, and you are not assigning the result to a variable.

Likewise for

                    any(a(k)==10)&&any(a(k)==54)&&any(a(k)==65)&&any(a(k)==76);

Answer 1

[Cris LaPierre]

EVS is only defined in the case where n>=3 (btw, you don't need the parentheses around n and 3). What is your value of n? If it's less than 3, this is your problem.