Q38735: Viewing Array Elements in CodeView

Article: Q38735
Product(s): See article
Version(s): 5.00 5.10 | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 12-DEC-1988

Question:

In CodeView, why am I unable to view elements of an array with an
index of type char in my C program? Whenever I do so, I get the
following error:

   "operand types incorrect for this operation"

Response:

Using a char variable to index an array is only valid in the C
language. As CodeView supports multiple languages, it does not allow
a char variable to index into an array, even if the program is written
in C.

For a workaround to view elements of an array indexed by a variable of
type "char", you need to cast the variable to an int type in
CodeView's Dialog Box as follows:

   > ? buffer[(int)i]

The following code sample demonstrates the situation:

#include <stdio.h>
main()
{
   int  j = 5;
   char i = 5;
   char buffer[10];

   scanf("%s",buffer);

}

When the above program is loaded, CodeView allows you to view
the fifth element of the array with the following commands:

   > ?buffer[5]

   > ?buffer[j].

However, the following command causes the error: "operand types
incorrect for this operation":

   > ?buffer[i]

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