Pointers in C++ - Lecture Notes PDF
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Riphah International University
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Summary
These notes provide an introduction to pointers in C++. They explain how pointers store memory addresses, not the values of variables, and how to declare, assign and use them using the * and & operators. They also touched on how pointers relate to arrays and memory allocation.
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Pointers Pointers Pointers in C++ are a special type of variable that store the memory address of another variable. They are powerful but require careful use. What is a Memory Address? Every variable in a program is stored in the computer's memory, and each memory location has an ad...
Pointers Pointers Pointers in C++ are a special type of variable that store the memory address of another variable. They are powerful but require careful use. What is a Memory Address? Every variable in a program is stored in the computer's memory, and each memory location has an address. A pointer holds this address, not the actual value of the variable. Declaring a Pointer: int* ptr; // 'ptr' is a pointer to an integer. Assigning a Value to a Pointer: Use the & operator to get the address of a variable. int x = 10; int* ptr = &x; // 'ptr' now stores the address of 'x'. Dereferencing a Pointer: Use the * operator to access or modify the value at the address stored in the pointer. cout
