Question

Fill-In-The-Blanks 13. Complete the code by filling in the blanks for each question below. (Length of blank doesn’t matter.)

a) Print out the contents of the array airlines. #include #include ________________ using namespace std; int main () { string airlines[] = {"american","pan-am","southwest"}; for (int i = 0;_______________;i++) cout << ____________ << endl; return 0; }

b) Read in 5 integers from the user and write them back out in reverse order int numbers[5]; for(int i = 0; ___________; _________) cin >> numbers[i]; for(int i = 4; ___________; _________) cout << numbers[i] << endl;

c) Sets a pointer and outputs the dereferenced value. int x = 5; int *xPtr; // xPtr "points to" x xPtr = _____________; cout << ___________ << endl;  

Answer 1

Please read comments for your understaning ...
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/*
* Print out the contents of the array airlines. #include
* #include ________________ using namespace std; int main ()
* { string airlines[] = {"american","pan-am","southwest"};
* for (int i = 0;_______________;i++) cout << ____________ << endl; return 0;
* }

b) Read in 5 integers from the user and
write them back out in reverse order int numbers[5];
for(int i = 0; ___________; _________) cin >> numbers[i];
for(int i = 4; ___________; _________) cout << numbers[i] << endl;

c) Sets a pointer and outputs the dereferenced value.
int x = 5; int *xPtr; // xPtr "points to" x xPtr = _____________; cout << ___________ << endl;
*/

#include <iostream> //Header that defines the standard input/output stream objects
using namespace std;
int main() {
   //===========================================================//
   //Q1.
   //===========================================================//
   string airlines[] = { "american", "pan-am", "southwest" };
   for (int i = 0; i<sizeof(airlines)/sizeof(string); i++) //sizeof(airlines)/sizeof(string) gets the size of airlines
       cout << airlines[i] << endl; //accessing the elements of array one by one
   //===========================================================//

   //===========================================================//
   //Q2.
   //===========================================================//
   int numbers[5];
   //Here loop will repeat i=0,1,2,3,4 and fails at i<5 when i = 5 so finally we will get five elements in out integer array
   for(int i = 0; i<5; i++) cin >> numbers[i];
   //Here loop will repeat i=4 ,3,2,1,0 and fails in condition check i>=0 here you keep your eye on = symbol at condition check[i<=4]
   //if = not there it will take only 4 elemets not 5 as we required
   for(int i = 4; i>=0; i--) cout << numbers[i] << endl;
   //===========================================================//

   //===========================================================//
   //Q3.
   //===========================================================//

   int x = 5; int *xPtr; // xPtr "points to" x
   xPtr = &x;
   cout <<"Dereferenced value :"<< *xPtr << endl;
   //===========================================================//

   return 0;
}

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