Question

4. Each of the following definitions and program s egments has errors. Rewrite them without errors. a. int x, *ptr; = ptr; b. int x, *ptr; c. int x, *ptr; ptr 100; // Store 100 in x cout << x << endl; d. int numbers10, 20, 30, 40, 50); cout << "The third element in the array is"; cout << *numbers 3<< endl; e. int values [20], *iptr; iptr - values; ptr *= 2;

Answer 1

a)
int x, *ptr;
x = *ptr;

b)
int x, *ptr;
ptr = &x;

c)
int x, *ptr;
ptr = &x;
*ptr = 100;
cout << x << endl;

d)
int numbers[] = {10, 20, 30, 40, 50};
cout << "The third element in the array is ";
cout << *(numbers+2) << endl;

e)
int values[20], *iptr;
iptr = values;
*iptr *= 2;   // what to do here is unclear