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A condition where in memory is reserved dynamically but not accessible to any of the programs is called _____________

(a) Memory leak

(b) Dangling pointer

(c) Frozen memory

(d) Pointer leak

I have been asked this question in examination.

I'm obligated to ask this question of DMA Functions, Memory Leak, Dangling Pointers topic in chapter Dynamic Memory Allocation in C of C

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The correct option is (a) Memory leak

Explanation: If we allocate memory dynamically in a function (malloc, calloc, realloc), the allocated memory will not be de-allocated automatically when the control comes out of the function. This allocated memory cannot be accessed and hence cannot be used. This unused inaccessible memory results in a memory leak.

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