Thread: How to access a Particular bit of an Memory address ????

I just want to get access to a Particular Bit of a memory address...
Remember I know the other way that is of accessing the data.. then Calculating its Binary....
I just want to know.... How can I get access to the desired bit of any memory address directly...
Suppose there is no = 4.
In m/m it will store as 0000 0100 (assuming 8-bit)
how can access its 3rd bit directly if I know its address...???

Originally Posted by CommonTater

Code:

int TestBit(int *ptr, int bit)
  { int x = 1 << bit;
     return *ptr & x; }

int main (void)
  { int test = 2022
    
     if (TestBit(test,3)
        printf("Its a 1");
     else 
       printf("its a 0");

     return 0; }

Thanks Man... Im also Thinking in the same way but you made it so Easily... Thanks a Lot..