Bifalgorithm post

What is a pointer in C or C++? A pointer is a variable that stores the memory address of another variable. When we declare a variable or a function or any object in C or C++, the compiler allocates memory internally to store it. Each memory location has an associated address. For instance, when we declare an integer variable num, the compiler allocates 4 bytes in memory for this integer variable. To get the address of this location in memory, we can apply the m% operator to the variable. It will return the starting address of that memory location. Like here, it might return 20,000 or some other numeric value. It denotes the memory address of that location. Now to store this memory address, we need a special type of variable. That is a pointer. We can declare a pointer by specifying the data type followed by an asterisk and then the variable name. Like here, PTR is an integer pointer. Pointers allow direct access to the value at the memory location. We can access data directly from memory and also modify it using pointers.

What is a pointer in C or C++? A pointer is a variable that stores the memory address of another variable. When we declare a variable or a function or any obje…