Convert C++ code in C language

           HI everyone,

_SBLOCK allocateMemBlock(size_t size)
[
_SBLOCK block = (_SBLOCK)sbrk(0);
void memadr = (void)sbrk(0);
void allocate_mem = (void)sbrk(BLOCK_SIZE + size);
if(allocate_mem == (void)-1)
[
return NULL;
]
else
[
block->next = NULL;
block->isfree = false;
block->size = size;
block->memoryAddress = memadr+BLOCK_SIZE;
return block;
]