Computer Science Canada Creating a Multiplication Program |
| Author: | slider203 [ Tue Feb 16, 2010 7:53 pm ] |
| Post subject: | Creating a Multiplication Program |
Hello I am trying to create a multiplication program where the user enters a number then is multiplied by 1 - 12 heres what I have so far Quote: //Import the input/output library. import java.io.*; class InputPractice1 { public static void main (String args []) //Prevents the program from crashing if incorrect input is entered. throws java.io.IOException { // Allows input from the keyboard. BufferedReader br = new BufferedReader (new InputStreamReader (System.in)); String name = "number"; System.out.println ("Please enter a number:"); //Waits for user input. name = br.readLine(); System.out.println (number + "x 1 = " + number * 1); <-----THIS LINE KEEPS GIVING ME PROBLEMS } } I keep getting an error that says 2 errors found: File: H:\ICS\nEW\InputPractice1.java [line: 33] Error: cannot find symbol symbol : variable number location: class InputPractice1 File: H:\ICS\nEW\InputPractice1.java [line: 33] Error: cannot find symbol symbol : variable number location: class InputPractice1 been trying but I cant get it to work. Please take a look any help is appreciated |
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| Author: | TerranceN [ Tue Feb 16, 2010 8:25 pm ] |
| Post subject: | RE:Creating a Multiplication Program |
Where did you declare number? You need to create a variable called number and assign the integer value of name to it. Also "throws java.io.IOException" will still cause it to crash if there is an exception. Hope that helps. |
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| Author: | DtY [ Tue Feb 16, 2010 8:26 pm ] |
| Post subject: | RE:Creating a Multiplication Program |
You are trying to multiply a string by a number. Imagine, what is "hello"*3? It doesn't make sense[1]. To do this, you'll have to either read as an integer (instead of a string), or convert the string to an integer after reading. [1] Some languages will actually give you "hellohellohello" for this |
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