How to dynamically allocate a 2D array in C?

I know how to allocate 2D array but dynamically allocation is not clear. Would be thankful if someone will answer.

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  • Following are different ways to create a 2D array on heap (or dynamically allocate a 2D array).
    In the following examples, we have considered ‘r‘ as number of rows, ‘c‘ as number of columns and we created a 2D array with r = 3, c = 4 and following values

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