Printing array

This is a discussion on Printing array within the C Programming forums, part of the General Programming Boards category; Hey, I am trying to print a 2D (3x3) array like this: Code: 1 2 3 4 5 6 7 ...

  1. #1
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    Question Printing array

    Hey, I am trying to print a 2D (3x3) array like this:
    Code:
    1 2 3
    4 5 6
    7 7 7
    I tried a while loop but it didnt work of course, could someone help be make it print like the above?
    Code:
    #include <stdio.h>
    #define NUM_ELEMENTS 3
    
    int main()
    {
    	int x[NUM_ELEMENTS][NUM_ELEMENTS]; //Declaration of the array
    	//int y[NUM_ELEMENTS][NUM_ELEMENTS];
    	//int z[NUM_ELEMENTS];
    
    	for(int a=0; a<NUM_ELEMENTS; a++)
    	{
    		for(int b=0; b<NUM_ELEMENTS; b++)
    		{
    			printf("Enter row &#37;d and column %d: \n",a,b);
    			scanf("%d",&x[a][b]);
    		}
    	}
    
    	printf("\n"); //Space
    	//int loop=0;
    
    	for(int i=0; i<NUM_ELEMENTS; i++)
    	{
    		for(int j=0; j<NUM_ELEMENTS; j++)
    		{
    			//while(loop != 3)
    			//{
    			printf(" %d ",x[i][j]); //Printing of array contents
    			//loop++;
    			//}
    		}
    	}
    }
    Right now it prints like this:
    Code:
    1
    2
    3
    4
    5
    6
    7
    7
    7
    Thanks
    Last edited by taurus; 09-04-2008 at 06:48 AM.

  2. #2
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    you should print the 2-d array like as below
    Code:
    for(i = 0; i < NUM_ELEMENTS;i++) {
               for(j = 0; j < NUM_ELEMENTS;J++)
                            printf("&#37;d\t", x[i][j]);
               printf("\n");
    }
    now out put of your program will be in ur format..

  3. #3
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    Ah yeah of course. Simple.

    Thanks

  4. #4
    Registered User Dogmasur's Avatar
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    Are the single-line comment identifiers // considered acceptable under c99 ANSI standard? They are used in C++, correct? Also, are you just leaving some of your code out ( ie variable initializers?) or can // be used outside of commenting ( as you have //int loop = 0)? I am just learning and this is unfamiliar to me, so I wanted to ask.
    "The art of living is more like wrestling than dancing." - Marcus Aurelius

  5. #5
    Woof, woof! zacs7's Avatar
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    Yes, // comments are C99 and C++. But not C89, but most compilers support them as a compiler extension (or just support them anyway...).

    No, // doesn't mean anything but a comment. Although / means divide, // is not double divide or anything

    Code:
    for(int i=0; i<NUM_ELEMENTS; i++)
    Isn't C89 anyway...

  6. #6
    Registered User Dogmasur's Avatar
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    Okay, but what about the second part of my query? Are we just generalizing the code to get to the point of the original question or are the // being used to initialize loop?
    Sorry, if I'm being daft, but I'm not going to learn if I don't ask.
    "The art of living is more like wrestling than dancing." - Marcus Aurelius

  7. #7
    Woof, woof! zacs7's Avatar
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    No... I edited my post to include that

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