Lecture 159

Lecture 159

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

void display(char*);  // Prototype

main ()

{

  char name[]={"Shahid"};

  display(name);

  getch();

  return 0;

}

void display(char name[])

{

  cout<<"Your name is : ";

  int i=0;

  while(name[i] != '\0')    

  {

        cout<<name[i];

        i++;

  }     

}

Output:

Lecture 158

Lecture 158

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

int f(int);  // Prototype

int g(int);

main ()

{

  int x,y,s=2;

  s*=3;

  y=f(s);

  x=g(s);

  cout<<"\n "<<s<<y<<x;

  getch();

  return 0;

}

int t=8;

int f(int a)

{

  a+=-5;

  t-=4;

  return a+t;

}

int g(int a)

{

  a=1;

  t+=a;

  return a+t;

}

Output:

Lecture 157

Lecture 157

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

int i=0;

void Val();  // Prototype

main ()

{

  cout <<"\n Main's i : "<<i;     

  i++;

  Val();

  cout <<"\n Main's i : "<<i;     

  Val();

  getch();

  return 0;

}

void Val()

{

  i=100;

  cout <<"\n Val's i : "<<i;     

  i++;

}

Output:

Lecture 156

Lecture 156

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

void Extern();  // Prototype

int x=21;

void display();  // Prototype

main ()

{

  int x=20;

  cout <<"\n Variable Local x : "<<x;     

  display();

  Extern();

  getch();

  return 0;

}

void Extern()

{

  cout <<"\n Variable Global : "<<x;  

  extern int x;

  x=23;

  cout <<"\n Variable external : "<<x;

}

void display()

{

  cout <<"\n Variable Global : "<<x;  

}

Output:

Lecture 155

Lecture 155

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

void Register();

void increment();

void increment1();  // Prototype

main ()

{

  Register();

  increment();

  increment();

  increment1();

  increment1();

  getch();

  return 0;

}

void Register()

{

  register int i;

   for(i=1;i<6;i++)

       cout <<"\n Register i : "<<i;

}

void increment()

{

    auto int i=1;

    cout <<"\n increment in auto i : "<<i;

    i=i+1;  

}

void increment1()

{

    static int i=1;

    cout <<"\n increment in static i : "<<i;

    i=i+1;  

}

Output:

Lecture 154

Lecture 154

//Procedures and Functions

//Code:

#include <iostream>

#include <conio.h>

using namespace std;

void Auto();

void Auto1();// Prototype

main ()

{

  Auto();

  getch();

  return 0;

}

void Auto()

{

  auto int i,j;

  cout <<"\n  i : "<<i<<"  j : "<<j;

  Auto1();

}

void Auto1()

{

  auto int i=1;

   {

        cout <<"\n  i : "<<i;    

         auto int i=2;

        {

          cout <<"\n  i : "<<i;    

          auto int i=3;

            {

               cout <<"\n  i : "<<i;    

            }

        }

   }

}

Output: