max function in c++

#include <iostream>
using namespace std;

template <typename T>
T max(T a, T b) {
    return (a > b) ? a : b;
}

int main() {
    int intMax = max(10, 5);
    double doubleMax = max(7.5, 12.3);

    cout << "Maximum of 10 and 5 is: " << intMax << endl;
    cout << "Maximum of 7.5 and 12.3 is: " << doubleMax << endl;

    return 0;
}

Explanation:

  • #include <iostream>: Includes the Input/Output Stream Library to enable input/output streams.
  • using namespace std;: Enables the usage of standard library functions and objects without specifying the namespace each time.
  • template <typename T> T max(T a, T b) { return (a > b) ? a : b; }: Defines a template function max that takes two parameters of type T and returns the greater value among them using the conditional operator ? :.
  • int main() { ... }: The main function where program execution begins.
  • int intMax = max(10, 5);: Calls the max function with integers 10 and 5 as arguments and stores the result in the variable intMax.
  • double doubleMax = max(7.5, 12.3);: Calls the max function with doubles 7.5 and 12.3 as arguments and stores the result in the variable doubleMax.
  • cout << "Maximum of 10 and 5 is: " << intMax << endl;: Outputs the maximum of 10 and 5.
  • cout << "Maximum of 7.5 and 12.3 is: " << doubleMax << endl;: Outputs the maximum of 7.5 and 12.3.
  • return 0;: Indicates successful completion of the main function and the program terminates.