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Thread: array size [10] need help!! any experts

  1. #1
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    Default array size [10] need help!! any experts

    Hi Guys,

    my choice 1. i key in the calories for the day but my program can calculate up till 4 days when i exit. so i am asking how to use array to calculate up to 10 days when i press 3 exit.

    an example of my output // display

    1. Enter Food and Intake per day
    2. Display food intake status
    3. Exit

    so let say i key in 8 days in 1. Enter Food and Intake per day , my exit 3. should show 8 days of the calculated intake by using array

    heres the code thanks alot

    import java.util.*; // for function scanner input
     
    public class Diet {
     
    	static int i = 0; 
     
    	static Scanner input = new Scanner (System.in).useDelimiter ("\r\n"); //system scann and print
     
    	static int[] breakfast = new int[10];   // declare as int 
        static int[] lunch = new int[10];		// delcare as int
        static int[] dinner =new int[10];		// declare as int
     
        static double[] getdata = new double [10];       // create an array of integers
     
    	static char selection = 'x'; // dummy initialization
     
        public Diet() {
     
        }
     
        public static void main(String [] args) throws Exception{
     
     
     
     
     
    	    while (selection !='Q'){ //loop
     
     
    	    	//display on run
     
     
    		   		System.out.println("**********Daily Food Intake**********");
    		    	System.out.println("1. Enter Food and Intake per day");
    		    	System.out.println("2. Display food intake status");
    		    	System.out.println("3. Exit");
    		    	System.out.println("*************************************");
     
    		    	System.out.print("Please Enter Your Choice: ");
     
    		    		selection = (char)System.in.read(); // dummy selection to capture input
    		    		System.in.read();
    		    		System.in.read();
     
     
    		    	if (selection == '1' || selection =='2' || selection == '3'){    // enter food(i) to store calories for the day using int array
     
     
    			    	if (selection == '1')
    			    	{
     
    			    		for (int i = 0; i < 10; i++) 
    			    			breakfast[i]=0;
    			    			lunch[i]=0;
    			    			dinner[i]=0;	
    			    		{
     
    				    		if (i == 0){
    				    			EnterFood(i);
    				    			i = 1;
    				    		}
    				    		else if (i == 1){
    				    			EnterFood(i);
    				    			i = 2;
    				    		}
    				    		else if (i == 2){
    				    			EnterFood(i);
    				    			i = 3;
    				    		}
    				    		else if (i == 3){
    				    			EnterFood(i);
    				    			i = 4;
    				    		}
    			    		}
    			    		//else{
    			    			//System.out.println("You have enter for all 3 day");
    			    	//	}		
     
     
    			    	}
     
    			    	if (selection == '2')   // choice 2, show calories for the day using selection 2 by totalcalories(i)
    			    	{
    			    		totalCalories(i);
    			    	}
     
    			    	if (selection == '3') // array store results and displayed the array data before terminates
    			    	{                            
     
    			    		System.out.println("Your Total intake for this day is " + getdata[0] + "Calories");
    			    		checkCalories(getdata[0]);
     
     
    			    		System.out.println("Your Total intake for this day is " + getdata[1] + "Calories");
    			    		checkCalories(getdata[1]);
     
                            System.out.println("Your Total intake for this day is " + getdata[2] + "Calories");
                            checkCalories(getdata[2]);
     
                             System.out.println("Your Total intake for this day is " + getdata[3] + "Calories");
                            checkCalories(getdata[3]);
     
                            	breakfast[i]=0;
    			    			lunch[i]=0;
    			    			dinner[i]=0;
     
     
     
    			    		selection = 'Q';   //while loop 
    			    	}	    		
    		    	}
    		    	else{
    		    		System.out.println("Please enter an valid option");  // display an error message
    		    	}
     
    			//}//end do	
     
    			//while loop
    			//while (selection !='Q');   	
     
    	    }//end while	
     
     
        }//end main
     
       //call method for Option 1-------------------------------------- 
       public static void EnterFood(int i)throws Exception{
     
       		setBreakfast();
       		setLunch();
       		setDinner();
       		getdata[i] = breakfast[i] + lunch[i]+ dinner[i]; //store to array
       		System.out.println("Total calories for the day = " + getdata[i]);	
     
       }
     
     
     
    //DAY 1------------  
       public static void setBreakfast()throws Exception{
    		System.out.print("1. Enter Breakfast intake <calories> : ");	
    		breakfast[i] = input.nextInt();  //capture input
     
       }
     
       public static void setLunch()throws Exception{
     
    		System.out.print("2. Enter Lunch intake <calories> : ");	
    		lunch[i] = input.nextInt(); //capture input
     
       }
     
       public static void setDinner()throws Exception{
    		System.out.print("3. Enter Dinner intake <calories> : ");	
    		dinner[i] = input.nextInt(); //capture input
     
       }
     
     
       //call method for Option 2--------------------------------------
       public static void totalCalories(int i){
     
       	double total = 0.0;
     
       		if (i==1){
       			total = getdata[0];  // total for intake breakfast + lunch + dinner
       			System.out.println("Your Total intake for this day is " + total + "Calories");
       			checkCalories(total);	
     
       		}
     
       		if (i==2){
       			total = getdata[1]; // total for intake breakfast + lunch + dinner
       			System.out.println("Your Total intake for this day is " + total + "Calories");	
       			checkCalories(total);
     
     
       		}
     
       		if (i==3){
       			total = getdata[2]; // total for intake breakfast + lunch + dinner
       			System.out.println("Your Total intake for this day is " + total + "Calories");
       			checkCalories(total);	
     
       		}   		 
     
       			if (i==4){
       			total = getdata[3]; // total for intake breakfast + lunch + dinner
       			System.out.println("Your Total intake for this day is " + total + "Calories");
       			checkCalories(total);	
     
       		}  
       		breakfast[i] = 0;    // reset after the diplaying day 1 and day 2 and day 3
       		lunch[i] = 0;	
       		dinner[i] = 0;	  	
       }
     
     
       public static void checkCalories(double a){  // check the calories intake if a is low, healthy or too much
     
    	   	if (a < 2000){
    	   		System.out.println("This intake is LOW");
     
    	   	}
     
    	   	if (a>=2000 && a <= 2500){
    	   		System.out.println("This intake is Healthy");
    	   	}
     
    	   	if (a > 2500){
    	   		System.out.println("This intake is TOO MUCH");
    	   	}
     
       } 
     
     
    }//end class
    Last edited by asdin; February 10th, 2012 at 10:53 PM.


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: array size [10] need help!! any experts

    I am not really sure what your question is. What exactly are you asking? Please read the link in my signature on asking questions the smart way and post an SSCCE with a specific question, and we'll go from there.
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
    Static Void Games - Play indie games, learn from game tutorials and source code, upload your own games!

  3. #3
    Super Moderator Norm's Avatar
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    Default Re: array size [10] need help!! any experts

    When you have code that is repeated again and again and again with only a small consistent change from one to the next you should think about how to reduce the code to one instance by using a variable instead of hardcoding new numbers.
    Look at the relationship between the value of i and the array index for these statements and the ones following it:
    if (i==1){
        total = getdata[0]; // total for intake breakfast + lunch + dinner
    Is the index always one less than the value of i?

  4. #4
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    Default Re: array size [10] need help!! any experts

    Quote Originally Posted by KevinWorkman View Post
    I am not really sure what your question is. What exactly are you asking? Please read the link in my signature on asking questions the smart way and post an SSCCE with a specific question, and we'll go from there.
    sorry , is hard to type here if you have seen the program output. i am using methods for my java, as i am require to do an array size[10]

    for my choice 1. i key in the calories for the day but my program can calculate up till 4 days when i exit. so i am asking how to use array to calculate up to 10 days when i press 3 exit.

    an example of my output // display

    1. Enter Food and Intake per day
    2. Display food intake status
    3. Exit

    so let say i key in 8 days in 1. Enter Food and Intake per day , my exit 3. should show 8 days of the calculated intake by using array

  5. #5
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    Default Re: array size [10] need help!! any experts

    Quote Originally Posted by Norm View Post
    When you have code that is repeated again and again and again with only a small consistent change from one to the next you should think about how to reduce the code to one instance by using a variable instead of hardcoding new numbers.
    Look at the relationship between the value of i and the array index for these statements and the ones following it:
    if (i==1){
        total = getdata[0]; // total for intake breakfast + lunch + dinner
    Is the index always one less than the value of i?
    yeah i am figuring but i just cant do array really need help lol. for the question you ask. my index 1 represent my 1st selection choice in calories intake.

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: array size [10] need help!! any experts

    Have you worked on the change I suggested to get rid of the 4 if statements and reduce the code to a few statements that uses an index that is computed from the value of i to access the contents of the array?
    try something like this:
     total = getdata[i-1];
    Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting

  7. #7
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    Default Re: array size [10] need help!! any experts

    Quote Originally Posted by Norm View Post
    Have you worked on the change I suggested to get rid of the 4 if statements and reduce the code to a few statements that uses an index that is computed from the value of i to access the contents of the array?
    try something like this:
     total = getdata[i-1];
    Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting
    yea, i am trying but i cant figure how to use method with arrays thats the problem... any ideas??? if i am not wrong i suppose to use array on my intergers values for breakfast,lunch,dinner. so it can store and loop back.

  8. #8
    Super Moderator Norm's Avatar
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    Default Re: array size [10] need help!! any experts

    how to use method with arrays
    Can you explain what data you are having problems using arrays with.
    You are using an array here:
    total = getdata[i-1];

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