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 vote132 views1 answer
C++ typeid get type name
C++
-1 vote80 views3 answers
Program to check smallest num in three numbers in c++
C++
-2 votes130 views6 answers
C++ array
C++
0 vote116 views1 answer
Bash test empty directory
C++
4 votes135 views2 answers
Round double to n decimal places c++
C++
0 vote130 views1 answer
Add partition mysql
C++
0 vote119 views1 answer
How to save system function output into a variable in c++
C++
0 vote125 views1 answer
C++ start thread later
C++
1 vote124 views1 answer
C++ accessing parent class functinons
C++
0 vote147 views1 answer
Std::is_standard_layout
C++