Store read memory process in a buffer then search it - c++

Question

I want to read the memory from a process for 16 MB (FFFFFF) and store it in a array, in a way that when I search inside the array like: array[i], i will be the real memory address.
Lets say I want to search from 000000 to FFFFFF, I want to make that jump sizeof(value), get the address from that address and store it in a var.
then if(var==value) return address.
i have this:
ReadProcessMemory(phandle,(void*)address,buffer,0xFFFFFF,0);
EDIT:
i have this (by BlueWanderer answer):
class offset_buffer{
private:
char *buf;
int offset;
public:
offset_buffer(char *in_buf, int in_offset)
: buf(in_buf), offset(in_offset){
}
char & operator[](int in_index){
return buf[in_index - offset];
}
void setOffset(int off){
offset=off;
}
void ReadMemory(){
LPBYTE point;
DWORD primeiroAddress = 0x000000;
DWORD finalAddress = 0xFFFFFF;
//LPBYTE buffer = new BYTE[finalAddress-primeiroAddress];
HANDLE phandle = OpenProcess(PROCESS_VM_READ,0,TargetPID);
ReadProcessMemory(phandle,(void*)primeiroAddress, buf, sizeof(buf), 0);
CloseHandle(phandle);
}
};
main(){
char *buffer = new char[0xFFFFFFF-0x0000000];
int address = 0x0000000;
offset_buffer b(buffer,address);
std::ostringstream ss;
int i=0;
TListItem *ListIt;
b.ReadMemory();
for(address=0x0000000;address<0xFFFFFFF;address+=sizeof(int)){
if(b[address]==StrToInt(Edit1->Text.c_str())){
ss << std::hex << address;
showValue();
ss.str(std::string());
}
}
what is wrong?? can someone help me? why it doesn't work

Answer 1

You want something like this?
class offset_buffer
{
private:
char *buf;
int offset;
public:
offset_buffer(char *in_buf, int in_offset)
: buf(in_buf), offset(in_offset)
{
}
char & operator[](int in_index)
{
return buf[in_index - offset];
}
};
It will map your real address to the index in the array
offset_buffer b(buffer, address);
if (b[0x0C2F8E3] == 123) return 0x0C2F8E3;