Dynamic Memory Allocation - tccicomputercoaching.com

The process of allocating memory during program execution is called dynamic memory allocation.

DYNAMIC MEMORY ALLOCATION FUNCTIONS IN C:

C language offers 4 dynamic memory allocation functions. They are,

malloc ()

calloc ()

realloc ()

free ()

Syntax:

1. malloc () function is used to allocate space in memory during the execution of the program.
malloc () malloc (number *sizeof(int));

2. calloc () function is also like malloc () function. But calloc () initializes the allocated memory to zero.

calloc () calloc (number, sizeof(int));

3. realloc ()

realloc is used to update size of data.

realloc (pointer_name, number * sizeof(int));

4. free ()

free is used to release the memory allocated by malloc and calloc function.

free (pointer_name);

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