C++/Generic/Template Overload

A generic version of myabs().

<source lang="cpp">

1. include <iostream>

using namespace std; template <class X> X myabs(X val) {

 return val < 0 ? -val : val;

} int main() {

 cout << myabs(-10) << "\n";    // integer abs
 cout << myabs(-10.0) << "\n";  // double abs
 cout << myabs(-10L) << "\n";   // long abs
 cout << myabs(-10.0F) << "\n"; // float abs
 return 0;

}

      </source>

Define template function for class type

<source lang="cpp">

1. include <iostream>

using namespace std; template <class type1, class type2> void myFunction(type1 x, type2 y) {

 cout << x << " " << y << "\n";

} int main() {

 myFunction(10, "hi");
 myFunction(0.23, 10L);
 return 0;

}

      </source>

Overload a function template declaration.

<source lang="cpp">

1. include <iostream>

using namespace std; template <class X> void f(X a) {

 cout << "Inside f(X a)\n";

} template <class X, class Y> void f(X a, Y b) {

 cout << "Inside f(X a, Y b)\n";

} int main() {

 f(10);     
 f(10, 20); 
 return 0;

}

      </source>