There are few important operations which we will do with the pointers very frequently. (a) we define a pointer variables (b) assign the address of a variable to a pointer and (c) finally access the value at the address available in the pointer variable. This is done by using unary operator * that returns the value of the variable located at the address specified by its operand. Following example makes use of these operations:#include <iostream>using namespace std;int main (){ int var = 20; // actual variable declaration. int *ip; // pointer variable ip = &var; // store address of var in pointer variable cout << "Value of var variable: "; cout << var << endl; // print the address stored in ip pointer variable cout << "Address stored in ip variable: "; cout << ip << endl; // access the value at the address available in pointer cout << "Value of *ip variable: "; cout << *ip << endl; return 0;}When the above code is compiled and executed, it produces result something as follows:Value of var variable: 20Address stored in ip variable: 0xbfc601acValue of *ip variable: 20 C++
Topic: Pointers
What are Using Pointers in C++ ?
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What is Pointers in c++ ?
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Where we use reference and where we use pointers ?Write their differences and advantages and disadvantages .
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Explain about Reference operator (&) ?
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What Are Pointers?
What are Using Pointers in C++ ?
Explain Accessing the Value at the Memory Address held by a Pointer ?
Why Use Pointers?
What are C++ Pointer Syntax ?
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What are pointers? Why should you care?
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What are Array of pointers ?
Where do we use pointers?
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Allocating a memory from the "Free Store" ?
Explain about Allocating a memory with new operator ?
Explain about De-allocating a memory with delete operator ?
Explain about Data type class pointers with example ?
Explain about memory leaks associated with pointers ?
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When local variable’s name is same as member’s name
What are function Pointer Syntax ?
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How to Using Polymorphism and Virtual Functions Instead of Function Pointers (C++) ?
What are Benefits of Function Pointers ?
Where They get Useful Function Arguments ?
Explain Smart Pointers (Modern C++) ?
What are Uses for smart pointers ?
What are Kinds of Smart Pointers ?
What are another Use of Pointers Efficient Array Processing ?
Explain about C++ Pointers and new
What are problems with pointers ?
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How to initialize a vector of pointers?
Explain about c++ Pointer Arithmetic ?
Explain about incrementing a Pointer ?
Explain decrementing a Pointer ?
Explain pointer Comparisons ?
