write a main function that declares two integer pointers xptr and ypttr. demonstrate the domultiplethings() function, that is, call the function with xptr and yptr as arguments. ensure the xptr and yptr points to valid memory locations before the function call. display the return value from the function. display the contents of the memory locations xptr and yptr points to.

A variable that stores a memory address is called a pointer. The addresses of other variables or memory items are stored in pointers. Another method of parameter passing, known as Pass By Address, also makes great use of pointers. For the allocation of dynamic memory, pointers are necessary.

code for implementation:

#include<iostream>

using namespace std;

int doMultipleThings(int* x, int* y)

{

int temp = *x;

*x = *y * 10;

*y = temp * 10;

return *x + *y;

}

int main(){

int* xPtr;

int* yPtr;

int x = 10; int y = 30;

//Ensure the xPtr and yPtr points to valid memory locations before the function call.

xPtr = &x;

yPtr = &y;

//Display the return value from the function.

cout<<"Return Value: "<<doMultipleThings(xPtr,yPtr)<<endl;

//Display the contents of the memory locations xPtr and yPtr points to.

cout<<"Memory address of x variable = "<<&x<<endl;

cout<<"Memory address of y variable = "<<&y<<endl;

cout<<"Memory Address in xPtr = "<<xPtr<<endl;

cout<<"Memory Address in yPtr = "<<yPtr<<endl;

return 0;

}

Output:

Return Value: 400

Memory address of x variable = 0x70fe2c

Memory address of x variable = 0x70fe28

Memory address in xPtr = 0x70fe2c

Memory address in yPtr = 0x70fe28.

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