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Function Details : memcpy

void *memcpy(void * destination,const void * source,size_t num) ;

Return Type : void *

New Generic pointer that can point to any data type
Read about return values of memcpy function .

1st Parameter Type : void *

New Generic pointer that can point to any data type

1st Parameter

Pointer to the destination memory block where the content is to be copied.

2nd Parameter Type : const void *

A pointer to a constant memory location of unspecified type. The pointed-to data cannot be modified through this pointer.

2nd Parameter

Pointer to the source memory block from which the content will be copied.

3rd Parameter Type : size_t

Platform-specific unsigned type for array indices and memory sizes.

3rd Parameter

The number of bytes to copy from the source to the destination.

Read more about parameters of memcpy in parameters section
The memcpyfunction in C language Copies one block of memory to another.
The memcpy function copies n bytes from the object pointed to by src to the object pointed to by dest. The behavior is undefined if the objects overlap. The function does not check for any terminating null character; it always copies exactly n bytes.
The memcpyfunction takes 3 parameters:
  • •
    void * `destination`: Pointer to the destination memory block where the content is to be copied.
  • •
    const void * `source`: Pointer to the source memory block from which the content will be copied.
  • •
    size_t `num`: The number of bytes to copy from the source to the destination.
Copies `num` bytes from the memory block pointed to by `source` to the memory block pointed to by `destination`. The memory areas must not overlap, as the behavior is undefined in that case. Returns a pointer to the `destination` memory block.
The memcpy function return value :
  • Returns a pointer to dest

Output

This example demonstrates basic usage of memcpy to copy a string.