Demonstrates the use of return values with reference type. : Function Parameters « Function « C++






Demonstrates the use of return values with reference type.

Demonstrates the use of return values with reference type.
#include <iostream>
#include <string>
using namespace std;
                                      
double& referenceMin( double&, double&);    
                                      
int main()
{
   double x1 = 3.1,  x2 = x1 + 10.5,  y;
   y = referenceMin( x1, x2);   
   cout << "x1 = " << x1 << "     "
        << "x2 = " << x2 << endl;
   cout << "Minimum: " << y  << endl;
   ++referenceMin( x1, x2);     
   cout << "x1 = " << x1 << "     "      
        << "x2 = " << x2 << endl;        
   ++referenceMin( x1, x2);           
                               
   cout << "x1 = " << x1 << "     "      
        << "x2 = " << x2 << endl;        
   referenceMin( x1, x2) = 10.1;       
                                 
   cout << "x1 = " << x1 << "     "    
        << "x2 = " << x2 << endl;      
   referenceMin( x1, x2) += 5.0;      
   cout << "x1 = " << x1 << "     "     
        << "x2 = " << x2 << endl;       
   return 0;
}
double& referenceMin( double& a, double& b){
    return a <= b ? a : b;       
}

           
       








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