Thread: Need help with an array assignment

  1. #1
    Registered User
    Join Date
    Apr 2008

    Need help with an array assignment

    Hey guys im having problems with this assignment. Thanks to all of you that helped with the sort. Now I have to put in a search function. The function I used works and the whole program works, the only problem I have is when you enter a two digit number into the array (I used 10) the search function will not return the right value. I have included my source code along with a couple of screen shots form the out put windows. In the first screen shot you can see that the search function works in the second screen shot I substitute 10 for 0 and the search function does not work. Any suggestions would be greatly appreciated.

    // arr.cpp : Defines the entry point for the console application.
    #define n 10
    #define NOT_FOUND -1 
    void sort_arr(int arr[]);
    int search(const int arr[]);
    int main()
           int  arr[n];
    	   printf("Enter the numbers in the array:\n ");
           for(int k=0; k<n; k++)
                   scanf("%d", &arr[k]);
           for(int t=0; t<n; t++)
    				   printf("%d", arr[t]);
           for(int t=0; t<n; t++)
    				   printf("%d", arr[t]);
    	printf("Please enter the target value:\n");
           return (0);
    void sort_arr(int arr[])
    int a, b, low;
    for(a=0; a<n; a++)
                   for(b; b<n; b++)
    int search(const int arr[])     
          int i, found = 0, target, where; 
    		  scanf("%d", &target);
          i = 0;
          while (!found && i < n) {
              if (arr[i] == target)
                    found = 1;
          /* Returns index of element matching target or NOT_FOUND	*/
          if (found)
                where = i;
                where = NOT_FOUND;
    	printf("%d", where);
    	return (where);

  2. #2
    Hurry Slowly vart's Avatar
    Join Date
    Oct 2006
    Rishon LeZion, Israel
    i do not see a problem, in the first sample 5 is 6th number so its index is 5
    in the second sample 7 is the 7th number and its index is 6

    that's exsactly the output of the program.
    Where is the problem?
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

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