Thread: Hey guys need abit of help please stressing like a mad thing

Originally Posted by shep

class jon {
    public static void main(String[]args) {
 
        char yes = 'y', no = 'n', answer1;
        int addition = 0, subtraction = 0;
 
        if ('y' < 5) {
            System.out.println("Do you drink alcohol? Y/N : ");
            answer1 = Keyboard.readChar();
        }
        else if (answer1 == 'y') {
            addition = (addition + 1);
        }
        else if (answer1 == 'n') {
            subtraction = (subtraction + 1);
        }
    }
}

i keep getting an error like this
error : variable answer1 might not have been initialized else if (answer1) == 'y')

Aren't you getting other compiler messages too? I mean, where is "Keyboard" defined?

Post the entire class file (including import statements) and post all compiler messages. Don't abbreviate. Don't paraphrase. Post all of the complete, exact messages.

Cheers!

Z

im sorry i tried to copy the error messages but it would not let me but ill put up the keyboard.class do u know how to upload .class file i tried but it said unvalid file

well here's the real program i have a couple of mistakes but i can sort it but not the error i keep getting
class Survey{
public static void main(String[ ] args)
{

char yes = 'y', no = 'n', answer1, answer2, answer3, answer4, answer5, answer6, answer7,answer8, answer9, answer10, answer11=0, answer12=0;
int addition=0, subtraction=0;

System.out.print("Do you like sports Y/N: ");
answer1 = Keyboard.readChar( );
if (answer1 == 'y')
{
addition=(addition + 1);
}
else if (answer1 =='n')
{
subtraction=(subtraction + 1);
}

System.out.print("Do you like ireland Y/N: ");
answer2 = Keyboard.readChar( );
if (answer2 == 'y')
{
addition=(addition + 1);
}
else if (answer2 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like movies Y/N: ");
answer3 = Keyboard.readChar( );
if (answer3 == 'y')
{
addition=(addition + 1);
}
else if (answer3 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like europe Y/N: ");
answer4 = Keyboard.readChar( );
if (answer4 == 'y')
{
addition=(addition + 1);
}
else if (answer4 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like america Y/N: ");
answer5 = Keyboard.readChar( );
if (answer5 == 'y')
{
addition=(addition + 1);
}
else if (answer5 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like Manchester United Y/N: ");
answer6 = Keyboard.readChar( );
if (answer6 == 'y')
{
addition=(addition + 1);
}
else if (answer6 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like Dublin Y/N: ");
answer7 = Keyboard.readChar( );
if (answer7 == 'y')
{
addition=(addition + 1);
}
else if (answer7 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like ITB Y/N: ");
answer8 = Keyboard.readChar( );
if (answer8 == 'y')
{
addition=(addition + 1);
}
else if (answer8 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like computers Y/N: ");
answer9 = Keyboard.readChar( );
if (answer9 == 'y')
{
addition=(addition + 1);
}
else if (answer9 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like programming Y/N: ");
answer10 = Keyboard.readChar( );
if (answer10 == 'y')
{
addition=(addition + 1);
}
else if (answer10 =='n')
{
subtraction=(subtraction + 1);
}

System.out.println("To Question 1o you like sports Y/N : You answered"+" "+ answer1);
System.out.println("To Question 2o you like ireland Y/N: You answered"+" "+ answer2);
System.out.println("To Question 3o you like movies Y/N: You answered"+" "+ answer3);
System.out.println("To Question 4o you like europe Y/N: You answered"+" "+ answer4);
System.out.println("To Question 5o you like america Y/N: You answered"+" "+ answer5);
System.out.println("To Question 6o you like Manchester United Y/N:You answered"+" "+ answer6);
System.out.println("To Question 7o you like Dublin Y/N:You answered"+" "+ answer7);
System.out.println("To Question 8o you like ITB Y/N:You answered"+" "+ answer8);
System.out.println("To Question 9o you like computers Y/N:You answered"+" "+ answer9);
System.out.println("To Question 10o you like programming Y/N:You answered"+" "+ answer10);

if ( 'y' < 5)
{
System.out.println("Thank you for answering the survey, to complete the survey could you answer these two questions ");
}
else if ('y' > 5)
{
System.out.println("Thank you for completing the survey ");
}

else if ('y' < 5)
{
System.out.println("Do you drink alcohol? Y/N : ");
answer11 = Keyboard.readChar( );
}
else if (answer11 == 'y')
{
addition=(addition + 1);
}
else if (answer11 == 'n')
{
subtraction=(subtraction + 1);
}

System.out.println("Do you eat potatoes? Y/N : ");
answer12 = Keyboard.readChar( );
if (answer12 == 'y')
{
addition=(addition + 1);
}
else if (answer12 == 'n')
{
subtraction=(subtraction + 1);
}

System.out.println("To Question 11o you drink alcohol? Y/N : You answered"+" "+ answer11);
System.out.println("To Question 12: Do you eat potatoes? Y/N : You answered"+" "+ answer12);

if ( 'y' == 2)
{
System.out.print("You have a very agreeable person ");
}
else if ('n' == 2)
{
System.out.print("You like saying no don't you!");
}
}
}

Heres a zip file for the program and the class file

In the program i am suppose to have 10 questions for the user to answer and if the user answer less than 5 yes then i got to ask them to answer two more questions

the error message seems to be that at line 155 System.out.println("To Question 11: Do you drink alcohol? Y/N : You answered"+" "+ answer11);

Heres the program again

class Survey2{
public static void main(String[ ] args)
{

char yes = 'y', no = 'n', answer1, answer2, answer3, answer4, answer5, answer6, answer7,answer8, answer9, answer10, answer11, answer12;
int addition=0, subtraction=0;

System.out.print("Do you like sports Y/N: ");
answer1 = Keyboard.readChar( );
if (answer1 == 'y')
{
addition=(addition + 1);
}
else if (answer1 =='n')
{
subtraction=(subtraction + 1);
}

System.out.print("Do you like ireland Y/N: ");
answer2 = Keyboard.readChar( );
if (answer2 == 'y')
{
addition=(addition + 1);
}
else if (answer2 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like movies Y/N: ");
answer3 = Keyboard.readChar( );
if (answer3 == 'y')
{
addition=(addition + 1);
}
else if (answer3 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like europe Y/N: ");
answer4 = Keyboard.readChar( );
if (answer4 == 'y')
{
addition=(addition + 1);
}
else if (answer4 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like america Y/N: ");
answer5 = Keyboard.readChar( );
if (answer5 == 'y')
{
addition=(addition + 1);
}
else if (answer5 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like Manchester United Y/N: ");
answer6 = Keyboard.readChar( );
if (answer6 == 'y')
{
addition=(addition + 1);
}
else if (answer6 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like Dublin Y/N: ");
answer7 = Keyboard.readChar( );
if (answer7 == 'y')
{
addition=(addition + 1);
}
else if (answer7 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like ITB Y/N: ");
answer8 = Keyboard.readChar( );
if (answer8 == 'y')
{
addition=(addition + 1);
}
else if (answer8 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like computers Y/N: ");
answer9 = Keyboard.readChar( );
if (answer9 == 'y')
{
addition=(addition + 1);
}
else if (answer9 =='n')
{
subtraction=(subtraction + 1);
}
System.out.print("Do you like programming Y/N: ");
answer10 = Keyboard.readChar( );
if (answer10 == 'y')
{
addition=(addition + 1);
}
else if (answer10 =='n')
{
subtraction=(subtraction + 1);
}

System.out.println("To Question 1o you like sports Y/N : You answered"+" "+ answer1);
System.out.println("To Question 2o you like ireland Y/N: You answered"+" "+ answer2);
System.out.println("To Question 3o you like movies Y/N: You answered"+" "+ answer3);
System.out.println("To Question 4o you like europe Y/N: You answered"+" "+ answer4);
System.out.println("To Question 5o you like america Y/N: You answered"+" "+ answer5);
System.out.println("To Question 6o you like Manchester United Y/N:You answered"+" "+ answer6);
System.out.println("To Question 7o you like Dublin Y/N:You answered"+" "+ answer7);
System.out.println("To Question 8o you like ITB Y/N:You answered"+" "+ answer8);
System.out.println("To Question 9o you like computers Y/N:You answered"+" "+ answer9);
System.out.println("To Question 10o you like programming Y/N:You answered"+" "+ answer10);

if ( 'y' < 5)
{
System.out.println("Thank you for answering the survey, to complete the survey could you answer these two questions ");
}
else if ('y' > 5)
{
System.out.println("Thank you for completing the survey ");
}

else if ('y' < 5)
{
System.out.println("Do you drink alcohol? Y/N : ");
answer11 = Keyboard.readChar( );
}
else if (answer11 == 'y')
{
addition=(addition + 1);
}
else if (answer11 == 'n')
{
subtraction=(subtraction + 1);
}

System.out.println("Do you eat potatoes? Y/N : ");
answer12 = Keyboard.readChar( );
if (answer12 == 'y')
{
addition=(addition + 1);
}
else if (answer12 == 'n')
{
subtraction=(subtraction + 1);
}

System.out.println("To Question 11o you drink alcohol? Y/N : You answered"+" "+ answer11);
System.out.println("To Question 12: Do you eat potatoes? Y/N : You answered"+" "+ answer12);

if ( 'y' == 2)
{
System.out.print("You have a very agreeable person ");
}
else if ('n' == 2)
{
System.out.print("You like saying no don't you!");
}
}
}

the error message is :variable answer11 might have not be initialized

i know what the problem is but does anyone know how to add all the answers up at the end and say "Thank you, you entered 7 Yes and 3 No"

At the beginning of the program declare ints yesCounter and noCounter. Set them to zero initially.

Then, every time you get user input that is 'y', increment yesCounter. Every time you get user input that is 'n', increment noCounter.

Or some such thing.


Cheers!

Z