simple question about variables and loops

This is a discussion on simple question about variables and loops within the C Programming forums, part of the General Programming Boards category; Code: { int i, j; i = 1; /* j = 1; */ while (i <=3){ printf("The start of iteration ...

  1. #1
    Registered User
    Join Date
    Mar 2004
    Posts
    494

    simple question about variables and loops

    Code:
    {
    	int i, j;
    
    	i = 1;
    	/* j = 1;  */
    
    
    		
    	while (i <=3){
    		
    	printf("The start of iteration %d of the outer loop.\n",i);
    		
    	 j = 1; /* why this should be here and not under i=1;*/
    		do 
    	
    	{
    		printf("	Ieteration %d of the inner loop,\n", j, i);
    		j++;
    	
    	}
    	while (j<=4);
    	i++;
    	printf("The end of iteration %d of the outer loop.\n", i);
    	}
    	return 0;
    }
    i have commented out where my question is, someone explain to me why j=1; should be put right before the do-while loop.
    When no one helps you out. Call google();

  2. #2
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    Aug 2004
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    If you put the j=1 outside of the outer loop then it will never be reset. Each pass of the inner loop will start with j = 4, so the inner loopo will only go through once.

    Immeditely before every while loop you have to set the starting point of your loop. Since teh inner loop goes through multiple times, each time through it you have to reset the counter's starting point.

  3. #3
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    Mar 2004
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    494
    ah that makes sense
    When no one helps you out. Call google();

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