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Array of pointer variables

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• Array of pointer variables
  • Recall: This is how you define a pointer (reference) variable:

    TYPE * pointerVarName;

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  • Recall: This is how you define an array variable:

    TYPE arrayVarName[ SIZE ];

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  • Then this is the way to define an array of pointer variable:

    TYPE * arrayVarName[ SIZE ];

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  • Example:

    int * a[10]; // array of 10 int pointer variables char * b[10]; // array of 10 char pointer variables

    What does it mean:

    a[0], a[1], ... are each a pointer variable to an int variable i.e.: each of these variables can store an address of an int variable b[0], b[1], ... are each a pointer variable to a char variable i.e.: each of these variables can store an address of a char variable

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  • Graphically:

    int * a[10]; // array of 10 int pointer variables

    will create the following data structure:

  • There are 10 variables:

    a[0] a[1] ... a[9]

    Each variable a[i] contains an address of an int variable