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C/array declaration

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Expert: - 7/20/2005


Question
how to declare a two dimesional array dynamicaly

Answer
You can use double pointer and then allocate memory.
After this use it as you use a 2-dim array.

char **arr;
arr = (char **) malloc(3);
arr[0] = (char *) malloc(100)
arr[1] = (char *) malloc(100)
arr[2] = (char *) malloc(100)

So, this can be used as a 3X100 array, which is created during runtime.

But, be careful while using this.
Because, array and pointers are not same.
You will have to understand the difference and then use it.
Otherwise, it will not work as you expect it to.

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