8.11 C++ How to Program (8th Edition) By Paul Deitel, Harvey Deitel

(Find the Code Errors) Find the error in each of the following segments. If the error can be corrected, explain how.

a)

 
int *number;
cout << number << endl;
 

b)

 
double *realPtr;
long *integerPtr;
integerPtr = realPtr;
 

c)

 
int * x, y;
x = y;
 

d)

 
char s[] = "this is a character array";
for ( ; *s != '\0'; ++s)
cout << *s << ' ';
 

e)

 
short *numPtr, result;
void *genericPtr = numPtr;
result = *genericPtr + 7;
 

f)

 
double x = 19.34;
double xPtr = &x;
cout << xPtr << endl;

Solution:

a)

 
int *number;
cout << *number << endl; // number prints number's address
 

b)

 
double *realPtr;
long *integerPtr;
*integerPtr = *realPtr; // it is not possible to assign address
 

c)

 
int * x, y;
* x = y; // or
x = &y;
 

d)

 
char s[] = "this is a character array";
for ( ; *s != '\0'; ++*s)
cout << *s << ' '; // pointer should be incremented
 

e)

 
will be added
 

f)

 
will be added