Learning..........C

Would like to better understand memory when it comes to programming. Variables can be assigned values within the program, however the use of pointers makes reference to a memory block instead of the actual variable? Are there different types of memory to consider when programming? What does "stack" mean? Any feedback would be appreciated.

Thanks

>> Are there different types of memory to consider when programming? <<

Well, yes and no. C is considered the "High-level ASM". Of course there are "types" of memory, but C doesn't specify the types. For instance, to set aside memory, you declare a variable/pointer.

There is a keyword you can use, though. The "register" keyword checks the CPU and puts the var in the register (memory of the chip) so it is quicker accessed.

Understand?

--Garfield

something about register!

this keyword suggest the cpu to put it in the register - but if it doesn't fit in there - it isn't forced to overwrite data in the register


every C program has 4 memory types!

stack, heap, global variable and code!

stack is a LIFO memory - Last In First Out

it is a very fast memory so you should use it for count variables in loops (every local variable is pushed on the stack or register)