Pointers in c++

void simple_pointer_examples() {
    int   a;  // a can contain an integer
	int*  x;  // x can contain the memory address of an integer. 
 	char* y;  // y can contain the memory address of a char. 
 	Foo*  z;  // z can contain the memory address of a Foo object.  
 
    a = 10;
    x = &a;   // '&a' extracts address of a 
  
    std::cout <<  x << std::endl; // memory address of a => 0x7ffe9e25bffc
    std::cout << *x << std::endl; //          value of a => 10
}

Pointer in c++

// Variable is used to store value
int a = 5;
cout << a; //output is 5

// Pointer is used to store address of variable
int a = 5;
int *ab;
ab = &a; //& is used get address of the variable
cout << ab; // Output is address of variable

Pointers c++

baz = *foo;

Source: cplusplus.com

C++ fonksion pointer

#include <stdio.h>
int f1(int x) { return x * 2; }
int f2(int x) { return x * 4; }

int main()
{
    int (*fptr1)(int) = &f1;
    fptr1 = &f2;
  	fptr1(3);
}

Source: necatiergin2019.medium.com

Similar codes

0 vote163 views1 answer
How to add an element to std::map
C++
6 votes147 views2 answers
Indexing strings in c++
C++
0 vote131 views1 answer
Vector of vector definaion in c++
C++
2 votes140 views1 answer
Final in c++
C++
-1 vote124 views1 answer
How to make a hello world program in c++
C++
0 vote124 views1 answer
Update variable in const function C++
C++
0 vote126 views1 answer
Max element in an array with the index in c++
C++
1 vote129 views1 answer
Start with pure c++ and opengl gamedev
C++
-1 vote145 views1 answer
51 13 C:\Users\usuario\Documents\Destajo 1.cpp [Error] 'gotoxy' was not declared in this scope
C++
2 votes141 views2 answers
Char
C++