c++ question

This is a discussion on c++ question within the C++ Programming forums, part of the General Programming Boards category; hello . I am new here and sorry my English isn't good . I know c++ language alittle and I ...

  1. #1
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    Question c++ question

    hello .
    I am new here and sorry my English isn't good . I know c++ language alittle and I think in some parts of it I am good , hope I can help you in them .
    I have a question about pointers :
    in c++ language if we have :
    . int a[10];
    . int *p;
    . p=a;
    we can say :
    . a[i]=*(p+i)
    my question is :
    if we have a[i][j] how we can define it with pointer .
    . a[i] = *(p+i)
    . a[i][j] = ?


    tnx

  2. #2
    and the hat of wrongness Salem's Avatar
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    Code:
    int main ( ) {
        int a[10] = { 0 };
        int *pa = a;
    
        int b[5][10] = { 0 };
        int (*pb)[10] = b;
    
        a[5] = 123;
        printf( "%d\n", *(pa+5) );
    
        b[2][4] = 321;
        printf( "%d\n", *(*(pb+2)+4) );
    
        return 0;
    }
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  3. #3
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    Smile

    thank alot salem

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