Assume num1 has been declared as an int, and ch has been declared as a char. Each of the following answers should be one line of code:
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- (a) Determine whether the following variable declaration is valid int INT; A Valid B Invalid (b) Determine whether the following variable declaration is valid. int *ptr; A Valid B Invalid (c) Which of the following statement about pointer is TRUE? A. A pointer variable is a variable used tostore an address B.A pointer holds the data, rather thanwhere to find the data C.The unary operator & is used to find anobject's value D.The unary operator * is used to find an object's addressQuestion 15 please Q11. Provide the output for the given C++ code about pointers. #include <iostream>using namespace std;int main(){char *ptr;char Str[] = "abcdefg";ptr = Str;ptr += 5;cout << ptr;return 0;} Q12. Provide the output for the given C++ code about arrays. #include <stdio.h>#include<iostream>using namespace std;int array1[] = {1200, 200, 2300, 1230, 1543};int array2[] = {12, 14, 16, 18, 20};int temp, result = 0;int main(){for (temp = 0; temp < 5; temp++){result += array1[temp];}for (temp = 0; temp < 4; temp++){result += array2[temp];}cout << result;return 0;} Q13. Provide the output for the given C++ code about arrays. #include <stdio.h>#include<iostream>using namespace std;int main (){int array[] = {0, 2, 4, 6, 7, 5, 3};int n, result = 0;for (n = 0; n < 8; n++){result += array[n];}cout << result;return 0;} Q14. Provide the output for the given C++ code about arrays. #include <stdio.h>#include…Explaining the importance of the concept of pointer, show how to obtain the address and value of a variable named deg that holds the value 5 in the int data type by using a pointer.
- There's this house I want to buy just right around the corner. I know its address but I don't know its value. Can you please help me determine it? Instructions: In the code editor, you are provided with an initial code which has main() function. In the main(), the user is asked for an integer input and then its address is assigned to a pointer variable (see line 10) Your task is to print the value of the pointer variable using the dereferencing operator.Assume aa is a pointer of int type, and has been allocated enough memory : int* aa = new int; Which line assign value 10 by using dereference and then release the memory correctly? Question 19 options: A. aa = 10; delete aa*; B. *aa = 10; delete aa; C. *aa = 10 delete []aa; D. aa = 10; delete [] aa;Address of Array//Write the output of each cout statement.//Assume the size of ints to be 4 bytes.//Assume the size of pointers to ints to be 8 bytes.int main() {int a[3][3]={{1,2,3},{4,5,6},{7,8,9}};cout << sizeof(a) << endl: //1: ___________________________cout << sizeof(a+0) << endl: //2: _____________________________cout << sizeof(*(a+0)) << endl: //3: _____________________________cout << sizeof(**a) << endl; //4: ____________________________cout << sizeof(&a) << endl; //5: _____________________________Assume the address of "a" is 0x7ffee2fef9e0cout << a + 1 << endl; //6: ________________________________________cout << *a + 1 << endl; //7: ________________________________________cout << **a + 1 << endl; //8: _______________________________________cout << &a << endl; //9: __________________________________________cout << &a + 1 << endl; //10:…
- Which function does not return the pointer correctly?The code below calls the getline member function of cin to read a line of characters from cin into an array of characters up to a certain limit specified as the second parameter of the call.Your job is to find out if the pointer returned from the function can still be used by the caller of the function to access the memory that is pointed to by the pointer.char *getName() { char buf[80]; cout << "Enter your name: "; cin.getline(buf, 80); return buf;}char *getName() { char buf[80]; cout << "Enter your name: "; cin.getline(buf, 80); return buf;}char *getName() { char *buf = new char[80]; cout << "Enter your name: ";cin.getline(buf, 80); return buf;}None of thesechar getName(char buf, int size) { **cout << "Enter your name: ";cin.getline(buf, size);return buf;}Create a function that can accept a pointers and array with values of 1000, 2, 3, 17, 50. Your program will display the array values and its averageThe following code C++ uses pointers and produces two lines of output. What is the output? int v1 = 10; int v2 = 25; int* p1 = &v1; int* p2 = &v2; *p1 += *p2; p2 = p1; *p2 = *p1 + *p2; cout << v1 << " " << v2 << endl; cout << *p1 << " " << *p2 << endl; find line 1 and 2.
- 1. Write a function called void swap with two parameters, which will receive the addressof x and y as pointer. The function should swap the value of x and y only if x is larger thany. Print the value of x and y after the function call. 2. Write a function called double getAverage(int *array, int SIZE), whereit accept the array as pointer, and return the average of the array. Print the returnedvalue from this function. Always use *array rather than subscript to access the arrayvalue.(define (add-one x) (+ x 1)) Add the following lines in the above statements and give the result. (define another-add-one add-one) (another-add-one 5) At the pointer level, what is happening here? Draw a picture in the answer box indicating what is happening.This lab will exercise your understanding of some of the concepts covered in Chapter 14: pointers and linked lists 1. Declare an integer pointer variable intPointer. Initialize it to point to an int variable named someInt. Assign the value 451 to someInt and output (cout) the variable someInt and output (cout) the value pointed to by intPointer. Write an assignment statement that indirectly stores 900 into the value pointed to by intPointer. Output (cout) the value pointed to by intPointer and output (cout) the variable someInt, 2. Declare a pointer variable charArrPointer and initialize it to point to the first element of a three-element char array named initials. Write assignment statements to store 'A', 'E', and 'W' into the first three elements of the array POINTED to by charArrPointer. Do NOT store any values directly into the array named initials. 3. Output (cout) the data in array charArrPointer and the data in array initials. 4. Copy the following code into your program above…
