Pointers are powerful features of C Language and (C++) programming that differentiates it from other popular programming languages like: Java and Python.
If you have a variable var in your program, &var will give you its address in the memory, where & is commonly called the reference operator.
You must have seen this notation while using scanf() function. It was used in the function to store the user inputted value in the address of var.
here, variable p is pointer variable for inta which store the address of int a in memory.
*p gives the value of variable a, but only p gives the address of variable a;
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