Thread: cannot convert `int (*)[2]' to `int*

  1. #1
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    Unhappy cannot convert `int (*)[2]' to `int*

    hello guys! i typed this code used "Code::Blocks",but it said "D:\My Documents\c code\let us c\p288.c|66|error: cannot convert `int (*)[2]' to `int*' in assignment|". why?
    this code is on page296 of "Let us c".
    Code:
    main()
    {
        int s[5][2]={
                        {1234,56},
                        {1212,33},
                        {1434,80},
                        {1312,78}
                     };
        int (*p)[2];
        int i,j,*pint;
    
        for(i=0;i<=3;i++)
        {
            p=&s[i];
            pint=p;
            printf("\n");
            for(j=0;j<=1;j++)
               /* printf("%d ",*(*(p)+j));*/
               printf("%d ",*(pint+j));
        }
    }
    thank you!

  2. #2
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    What else would you expect for "pint=p", since pint is of type "int*" while p is a pointer to an array of [2] ints.

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    thank you

    Quote Originally Posted by itCbitC View Post
    What else would you expect for "pint=p", since pint is of type "int*" while p is a pointer to an array of [2] ints.
    This is the program given in Let Us C book.I am following it to learn C. you mean the book is incorrect!

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    Quote Originally Posted by luoyangke View Post
    This is the program given in Let Us C book.I am following it to learn C. you mean the book is incorrect!
    Are you sure the code isn't like this instead?
    Code:
    pint = p[0];
    bit∙hub [bit-huhb] n. A source and destination for information.

  5. #5
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    Quote Originally Posted by bithub View Post
    Are you sure the code isn't like this instead?
    Code:
    pint = p[0];
    Code:
    pint=p;
    sure! p296 of Let Us C 5th
    thank you!
    Last edited by luoyangke; 11-11-2009 at 10:48 AM.

  6. #6
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    Quote Originally Posted by luoyangke View Post
    Code:
    pint=p;
    sure! p296 of Let Us C 5th
    thank you!
    Sounds like they need a 6th edition then.
    bit∙hub [bit-huhb] n. A source and destination for information.

  7. #7
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    Quote Originally Posted by luoyangke View Post
    This is the program given in Let Us C book.I am following it to learn C. you mean the book is incorrect!
    Yep!

    So either cast the pointer pint = (int *) p; or bithub's way.
    Last edited by itCbitC; 11-11-2009 at 11:18 AM.

  8. #8
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    Quote Originally Posted by bithub View Post
    Sounds like they need a 6th edition then.
    lol!

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    Let Us C is not a good book. I recall a while back seeing a post from someone who was confused about the fact that code from that book wasn't working properly. I scanned through some of the book, and there are numerous problems. Avoid it. If you learn C from Let Us C, be prepared to unlearn some of it when you come into contact with more competent instruction.

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    Smile thank you

    Quote Originally Posted by cas View Post
    Let Us C is not a good book. I recall a while back seeing a post from someone who was confused about the fact that code from that book wasn't working properly. I scanned through some of the book, and there are numerous problems. Avoid it. If you learn C from Let Us C, be prepared to unlearn some of it when you come into contact with more competent instruction.
    thank you!

    can you recommend some books for me

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