Don't know why this is happening

This is a discussion on Don't know why this is happening within the C Programming forums, part of the General Programming Boards category; I'm just in the beginning stages of my code and already I'm in trouble. The part that I'm working on ...

  1. #1
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    Question Don't know why this is happening

    I'm just in the beginning stages of my code and already I'm in trouble.
    The part that I'm working on is supposed to read a map into a 2d array, and I wanted to print out the array to see if I got the whole thing.
    However, when I print it out, I get everything except for the half of the last line.

    Here is my code so far:
    #include <stdio.h>

    #define MAXROW 50
    #define MAXCOL 100

    main ()
    {
    int Row_Num, Col_Num;
    char Map[MAXROW][MAXCOL];
    char Moves[50];
    int ctr_Row, ctr_Col;

    scanf ("%d %d", &Row_Num, &Col_Num);
    if ((Row_Num<=MAXROW)&&(Col_Num<=MAXCOL))
    {
    printf ("%d %d\n", Row_Num, Col_Num);
    for (ctr_Row=0;ctr_Row<Row_Num;ctr_Row++)
    for (ctr_Col=0;ctr_Col<Col_Num;ctr_Col++)
    scanf ("%c", &Map[ctr_Row][ctr_Col]);
    for (ctr_Row=0;ctr_Row<Row_Num;ctr_Row++)
    for (ctr_Col=0;ctr_Col<Col_Num;ctr_Col++)
    printf ("%c", Map[ctr_Row][ctr_Col]);
    printf ("\n");
    printf ("%d %d", ctr_Row, ctr_Col);
    }
    return 0;
    }
    and when I run the prog, the counters all come out correct, so what gives? Any help is greatly appreciated.
    Thanks

    Doug

  2. #2
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    oh, and sorry about the formatting, I thought the indentations would come out.

    Doug

  3. #3
    Nit
    Nit is offline
    Registered User
    Join Date
    Mar 2002
    Posts
    42
    Code:
    #include <stdio.h> 
    
    #define MAXROW 50 
    #define MAXCOL 100 
    
    main () 
    { 
       int Row_Num, Col_Num; 
       char Map[MAXROW][MAXCOL]; 
       char Moves[50]; 
       int ctr_Row, ctr_Col; 
    
       scanf ("%d %d", &Row_Num, &Col_Num); 
       if ((Row_Num<=MAXROW)&&(Col_Num<=MAXCOL)) 
       { 
          printf ("%d %d\n", Row_Num, Col_Num); 
          for (ctr_Row=0;ctr_Row<Row_Num;ctr_Row++) 
             for (ctr_Col=0;ctr_Col<Col_Num;ctr_Col++) 
                scanf ("%c", &Map[ctr_Row][ctr_Col]); 
             for (ctr_Row=0;ctr_Row<Row_Num;ctr_Row++) 
                for (ctr_Col=0;ctr_Col<Col_Num;ctr_Col++) 
                   printf ("%c", Map[ctr_Row][ctr_Col]); 
                   printf ("\n"); 
                   printf ("%d %d", ctr_Row, ctr_Col); 
       } 
    
       return 0; 
    }
    http://www.KBeutler.com

  4. #4
    Registered User
    Join Date
    Mar 2002
    Posts
    95
    all the characters I entered in printed out, the very first scan which reads the array dimension to use, is that meant to be inclusive, ie I put in "2 3" and entered 3 characters where as I would assume it should be 6 characters. If this is the problem you mean, then in the for statements that read:

    Code:
    for (ctr_Row=0;ctr_Row<Row_Num;ctr_Row++) 
             for (ctr_Col=0;ctr_Col<Col_Num;ctr_Col++)
    change it to

    Code:
    for (ctr_Row=0;ctr_Row<=Row_Num;ctr_Row++) 
             for (ctr_Col=0;ctr_Col<=Col_Num;ctr_Col++)

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