Problem: Answer the following questions first, then write a program to verify yo

Question

Problem: Answer the following questions first, then write a program to verify your results (Hint: after each statement, add a cout statement).Submit this page and your program together.

A C++ program contains the following statements:

     float a,*pa;

     float b, *pb;

     float c;

     a = 3.0;

     b = 1.9;

     pa = &a;

     *pa = 3*a;

     pb = &b;

     *pb += 0.5;

     c = *pa +*pb;

Suppose each floating-point number occupies 4 bytes of memory. Assume further that the address of variable a is 128800, the address of variable b is 128804, and the address of variable c is 128808.

Draw a layout of memory, its variables and its pointers. Then answer the following questions.

ii) What value is assigned to pa?_______________________

ii) What value is represented by *(&a)? ________________________

iii) What value is represented by *pa? __________________________

iv) What value is represented by &(*pb)? _______________________

v)  What value is assigned to c?    ____________________________

vi) What value is assigned to pb?    ___________________________

Explanation / Answer

#include <iostream>

using namespace std;

int main(void) {

            // your code goes here

            float a,*pa;

     float b, *pb;

     float c;

    a = 3.0;

     b = 1.9;

     pa = &a;

     *pa = 3*a;

     pb = &b;

     *pb += 0.5;

     c = *pa +*pb;

     cout<< pa << endl;

     cout<< *(&a) << endl;

     cout<< *pa << endl;

     cout<< &(*pb) << endl;

     cout<< c << endl;

     cout<< pb << endl;

            return 0;

}

output

Success time: 0 memory: 3456 signal:0

i) 0xbf859fec(128800)

ii) 9

iii) 9

iv) 0xbf859fe8(128804)

v) 11.4

vi) 0xbf859fe8((128804)

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