C++ using Functions and Global and local variables Program

C++ Using Functions

            #include

            #include

            using namespace std;

            void myprint()

            {

                        cout << "Printing from a function.\n";

            }

             int main()

            {

                        myprint();

                        return 0;

            }

Parameters and return

            #include

            #include

            using namespace std;

            int add(int output1, int output2)

            {

                        return output1 + output2;

            }

            int main()

            {

                        int answer, input1, input2;

                        cout << "Give a integer number:";

                        cin >> input1;

                        cout << "Give another integer number:";

                        cin >> input2;

                        answer = add(input1,input2);

                        cout << input1 << " + " << input2 << " = " << answer;

                        return 0;

            }

Global and local variables

            #include

            #include

            using namespace std;

            int a, b;

            int add()

            {

                        return a + b;

            }

            int main()

            {

                        int answer;

                        a = 2;

                        b = 2;

                        answer = add();

                        cout << A << " + " << B << " = " << answer;

                        return 0;

            }

Definition

#include

#include

using namespace std;

long factorial(int);

int main()

{

          int counter, n;

     cout<<"Enter the Number :";

     cin>>n;

     cout<

     getch();

     return 0;

 }

Factorial Function

#include

#include

long factorial(int n)

{

    int counter;

    long fact = 1;

     for (int counter = 1; counter <= n; counter++)

     {

         fact = fact * counter;

     }

  return fact;

}

Output

Enter the Number :6

6 Factorial Value Is 720

Addition Function Using Templates

#include

#include

#include

using namespace std;

template type add(type num1, type num2);

int main ()

{

  std::cout << "Please enter integer 1 : ";

  int num1;

  cin >> num1;

  cout << "Please enter integer 2 : ";

  int num2;

  cin >> num2;

  int answer = add(num1, num2);

  cout << "The sum of " << num1 << " & " << num2 << " = " << answer;

  getchar();

  return 0;

}

template type add(type num1, type num2)

{

  type result = num1 + num2;

  return result;

}