Created: 2022-02-12
Tags: #fleeting
Header stdint.h
It's helpful to express four bits into hexadecimal because
four 1's or 0's bits equates to one hexadecimal
The addresses for memory uses hexadecimal, specifically 16 digits.
*x = 42 The *x is a deference operator.
It translates to --> go to the address of x and assign an integer 42.
Integer Overflow or Underflow is dangerous
Buffer Overflow
Buffer is just a chunk of memory. Going beyond the boundaries of an array such as using more memory than the assigned malloc value
Heap Overflow
Stack Overflow
if "stack" overlaps heap it is known as stack overflow.
If "heap" overlaps stack it is known as heap overflow.
heap/heap space - big chunk of memory that malloc uses to get you some spare memory,
stack/stack space - when you call functions, they take up the stack space
ScanF
format = %i, %d, %s
address of the variable = &var
scanf(format, address of the variable)