In C++ Language (please use hint) :
Write a function which will swap its arguments if the first argument is greater than its second argument, but will not interchange them if the first argument is samller than or equal to the second argument. The function should return 1 if a swap was made, and 0 otherwise.
(Hint: Make sure to use call by reference.)
Write also a short test driver (i.e. a main() invoking your function).
Call by reference: In this approach, passing the arguments to a method copies the address or reference of an argument into the formal parameter. The argument inside this method is used to access the real parameters used in the function call.
return_type name_of_function(data_type variable_name);
int sum(int a);
Below is the approach and code of a C++ program to swap two numbers by using call by reference technique.
//importing header file
using namespace std;
//prototype of swap function
int swap(int &l, int &m);
//main function declared
int main ()
//declaring variables as per the requirement
cout << "Before swapping the value of i is :";
//prompt user to take input
cout << "Before swapping the value of j is :";
//prompt user to take input
//calling swap function to swap the values of i and j using reference variables l and m
int s = swap(i, j);
//displaying the value of i after swapping
cout << "After swapping the value of i is :" << i << endl;
//displaying the value of j after swapping
cout << "After swapping the value of j is :" << j << endl;
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