Question

make the following "swap" working corretly,

write the missing code at line 14.

1. #include <iostream>

2. using namespace std;

3. void swap(int& x, int& y)

4. {

5. int z = x;

6. x =y;

7. y=z;

8. }

9. int main ()

10. {

11. int a= 45, b =35;

12. cout<<" before swap\n";

13. cout<<"a = " << a << "b = " << b<< "\n";

14. ________________________

15. cout << "After swap with pass by reference\n";

16. cout << "a = " << a << " b = " << b << "\n";

17. }

Write a template function count that returns the number of occurences of value in the array a[0:n-1].

Answer 1

Missing code :

• Line 14 missing the method call that is method swap() is not called
• need to call the method like swap(a,b);

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CPP program :

//header files
#include <iostream>
using namespace std;
//swap() method
void swap(int& x, int& y)
{
int z = x;
x =y;
y=z;
}
//main() method
int main ()
{
int a= 45, b =35;//declaring variables
cout<<" before swap\n";
//pritn value of a and b
cout<<"a = " << a << " b = " << b<< "\n";
//call method swap() and pass a and b
swap(a,b);//function call
//print value of a and b
cout << "After swap with pass by reference\n";
cout << "a = " << a << " b = " << b << "\n";
}

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Screen for indentation :

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Output :