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 vote120 views1 answer
Balanced brackets hackerrank solution c++
C++
0 vote106 views1 answer
The smallest element from three
C++
0 vote108 views1 answer
Yearly interest calculator c++ using for loop
C++
-1 vote120 views2 answers
Delete file cpp
C++
0 vote108 views1 answer
Restart the computer in c++ after the default time (30) seconds. (Windows)
C++
0 vote104 views1 answer
Mkdir c++
C++
0 vote109 views1 answer
How to adjust and delete memory in c, c++
C++
0 vote117 views1 answer
Error: ‘memset’ was not declared in this scope in cpp
C++
0 vote108 views1 answer
How to block the screen c++
C++
4 votes115 views2 answers
Max value of double c++
C++