malloc

The malloc function allocates memory and returns a pointer to the allocated space.

void* malloc(size_t size);

Parameters

Parameter	Description
`size`	Specifies the number of bytes to allocate.

Return Value

If the function succeeds, the return value is a pointer to the allocated memory. If the function fails to allocate the requested space, the return value is NULL.

Note: The allocated memory is not initialized. If you need initialized memory, consider using calloc.

Remarks

The malloc function allocates at least size bytes of memory. The value of size must be greater than zero.

The memory returned by malloc is guaranteed to be sufficiently aligned for any type of object.

To free allocated memory, use the free function.

Example


                    // Allocate memory for an integer
                    int* ptr = (int*)malloc(sizeof(int));
                    if (ptr == NULL) {
                        // Handle allocation failure
                        perror( "malloc failed" );
                        return 1;
                    }
                    // Use the allocated memory
                    *ptr = 10;
                    printf( "Value: %d\n", *ptr );
                    // Free the allocated memory
                    free(ptr);

Requirements

Attribute	Value
Minimum supported client	Windows 2000 Professional
Minimum supported server	Windows 2000 Server
Header	`stdlib.h`
Library	Use `msvcrt.lib`
DLL	`msvcrt.dll`