What is Dynamic Memory allocation? Mention the syntax

Programming Language
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#1

Dynamic Memory Allocation is the process of allocating memory to the program and its variables in runtime. Dynamic Memory Allocation process involves three functions for allocating memory and one function to free the used memory.

malloc() – Allocates memory

Syntax:

1 ptr = (cast-type) malloc(byte -size);

calloc() – Allocates memory

Syntax:

1 ptr = (cast-type*)calloc(n, element-size);

realloc() – Allocates memory

Syntax:

1 ptr = realloc(ptr, newsize);
free() – Deallocates the used memory

Syntax

1 free(ptr);