Character pointer arrays

This is a discussion on Character pointer arrays within the C Programming forums, part of the General Programming Boards category; Code: who knows why the while loop prints correctly while does not proceed to print with the for loop ??... ...

  1. #1
    axe
    axe is offline
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    Character pointer arrays

    Code:
    who knows why the while loop prints correctly while does not proceed to print with the for loop ??...
    char *aqq[30000];
       while(fgets(c,sizeof(c),fq)!=NULL)
       {
         aqq[count]=c; count++;
        printf("%s listed---: ",&aqq[count])
       }
    
       for(i=0;i<=count;i++)
       {
         printf("%s listed---: ",&aqq[i]);
       }

  2. #2
    Kernel hacker
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    Farncombe, Surrey, England
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    Because you are setting every entry in your big array to the same address, that of "c". So when you print all the data, you get whatever the last line was, printed count number of times.

    You would need to create a new string for each line you read, e.g. malloc(strlen(c)+1) and strcpy().

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

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