Question

Problem - 1: For the following declarations below, indicate which of the following statements are valid or not 5 Points int At yAddst; long *dtAddst, ptAddst; double *ptZ int a long b; double c 1. yAddst =&a; 3. yAddst Atl 4, pt2=&a; 5, ptAddst &b: 2. yAddst =&c; Problem - 2: Consider Problem - 1 in HW-3 that calculates the value of the series e, sinx, cos r using functions. Now modify this C++ program to calculate the value of the series by passing the variables to the functions using pointers only. Note: all variables passed to the functions should be pointers 6 Points a. The inputs, outputs and the algorithm you use should be included as a document file along with your program listing (source code). In the same document file, prepare a help section with the sample input-output screens indicating the input and outputs Problem - 3: The approximation of v8 can be calculated using the following function y()2- s Now, considering z 3.5, & r3 1.5, find the roots of this function (in tabular form) using: 9 Points . (a) Bisection method . (b) Secant method, and (b) Method of False Position (Regula-Falsi Method) Note that programming is not required for Problem - 3

Answer 1

include <iostream>
using namespace std ;
int main() {

    //problem 1 part 1

    int *yAddist;// declaring pointer to an int

    int a ;
    //&a means address of  variable a
    //variable yAddist is declared  to hold address of an int

    yAddist = &a ;  //assigning address of an int to an int pointer
                    // which is a valid assignment



return 0 ;

}

Process finished with exit code θ

#include <iostream>
using namespace std ;
int main() {

    //problem 1  part 3

    int *yAddist , *At1 ;//  declaring 2 pointers  to an int

   // now At1 and yAddist can store address of an int
    // currently At1 is not initialized and contain the garbage value
    //which will be assignes to yAddist
    // since type missmatch is  not occuring so compiler will give no error


yAddist = At1;
    cout<< " valid statement"<< endl;
return 0 ;

}

valid statement Process finished with exit code θ

#include <iostream>
using namespace std ;
int main() {

    //problem 1  part 5



    long *ptAddst;
    //so ptAddst can store address of any variable with type long
    // b is a variable whose type is long
    long  b ;
    //&b means address of variable b
    // so address of b is assignes to a variable which can store address of any
    // double variable
    // so the assignment is valid ;

    ptAddst = &b;

cout<< " valid assignment "<< endl;

return 0 ;

}

valid assignment | ↓ | as Process finished with exit code θ

#include <iostream>
using namespace std ;
int main() {

    //problem 1  part 2
double  c ;// c is a variable of type double
    int *yAddst;
    //since yAddst is a pointer to an int
    //so variable yAddst can store address of any variable with type int


    // we cannot assign address of a double to a pointer of type int
    //type miss match happend
    //so error

    yAddst = &c ;



cout<< "  invalid  assignment "<< endl;

return 0 ;

}

\Userslashok CLionProjectsluntitled15 main.cpp:18:12: error: cannot convert 'double* to 'int* in assignment

#include <iostream>
using namespace std ;
int main() {

    //problem 1  part 4


    double *ptZ ;// ptZ can point to any variable of type double
    int a ;// variable a  is of type int 

    // here we are trying to assign address of a variable of type int to a variable
    //which can store address of double
    //so type miss match happend  , compiler will give error
    ptZ = &a ;

    

return 0 ;

}

C:\Users ashok\CLionProjectsluntitled151main.cpp:16:9: error: cannot convert 'int*' to double*' in assignment