C++ program to get the Arithmetic Mean of first 10 natural numbers (from 1 to 10) using FOR loop, WHILE loop and DO WHILE loop

C++ program to get the Arithmetic Mean of first 10 natural numbers (from 1 to 10) using FOR loop, WHILE loop and DO WHILE loop:

#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
clrscr();
int i, a;
float mean, sum=0;
cout<<"Mean of first 10 natural rumbers (1 to 10): ";
i=1;
cout<<"\n\nEnter your choice:"<<"\n"<<"1-> Using for loop"<<"\n"<<"2-> Using while loop"<<"\n"<<"3-> Using do...while loop"<<"\n\n";
cin>>a;
switch(a)
{
case 1:
for(i=1; i<=10; i++)
sum=sum+i;
cout<<"\nSum = "<<sum;
mean=(float)sum/10;
cout<<"\nMean = "<<mean;
break;
case 2:
while(i<=10)
{
sum=sum+i;
i++;
}
cout<<"\nSum = "<<sum;
mean=(float)sum/10;
cout<<"\nMean = "<<mean;
break;
case 3:
do
{
sum=sum+i;
i++;
}
while(i<=10);
cout<<"\nSum = "<<sum;
mean=(float)sum/10;
cout<<"\nMean = "<<mean;
default:
break;
}
getch();
}

C++ program to implement Stack ADT using Array

#include<iostream.h>
#include<conio.h>
#define maxsize 10
class stack
{
private:
int a[maxsize];
int top;
public:
stack();
void push(int i);
void pop();
void display();
}
stack::stack()
{
top=0;
}
void stack::push(int i)
{
if(top==maxsize)
cout<<"\nStack is full";
else
{
top++;
a[top]=i;
}
}
void stack::pop()
{
if(top==0)
cout<<"\nStack is empty";
else
{
int i=a[top];
top--;
}
}
void stack::display()
{
if(top==0)
cout<<"Stack is empty";
else
{
cout<<"\nThe elements in the stack are: ";
for(int i=0; i<=top;i++)
cout<<a[i]<<'\t';
}
}
int main()
{
stack s;
int x,ch;
do
{
cout<<"\n1.Push";
cout<<"\n2.Pop";
cout<<"\n3.Display";
cout<<"\n4.Exit";
cout<<"\nEnter the choice";
cin>>ch;
switch(ch)
{
case 1:
cout<<"\nEnter the element to be pushed";
cin>>x;
s.push(x);
cout<<"\nThe element is inserted";
break;
case 2:
s.pop();
break;
case 3:
s.display();
case 4:
break;
}
}while(ch!=4);
getch();
}

Program to find the Fibonacci Series using DO WHILE loop (3)

#include<stdio.h>

void main()

{

int a,b,c,n,i;

clrscr();

a=0;

b=1;

i=3;

printf("Enter the number of terms: ");

scanf("%d",&n);

printf("%d\n%d",a,b);

do

{

c=a+b;

printf("\n%d",c);

a=b;

b=c;

i=i+1;

}

while (i<=n);

getch();

}

C++ program to implement Stack ADT using Linked List

#include<iostream.h>

#include<conio.h>

struct node

{

int data;

node *link;

};

class stack

{

private:

struct node *top;

public:

stack();

void push(int n);

void pop();

void display();

};

stack::stack()

{

top=NULL;

}

void stack::push(int n)

{

node *tmp;

tmp= new node;

if(tmp==NULL)

cout<<"\nStack is empty";

else

{

tmp->data=n;

tmp->link=top;

top=tmp;

}

}

void stack::pop()

{

if(top==NULL)

cout<<"\nStack is empty";

else

{

node *tmp;

int n;

tmp=top;

n=tmp->data;

top=top->link;

delete tmp;

}

}

void stack::display()

{

node *tmp;

tmp=top;

if(tmp==NULL)

cout<<"\nStack is empty";

else

{

cout<<"\nThe elements in the stack are:";

while(tmp!=NULL)

{

cout<<tmp->data;

tmp=tmp->link;

}

}

}

void main()

{

clrscr();

stack s;

int x,ch;

do

{

cout<<"\n1.Push";

cout<<"\n2.Pop";

cout<<"\n3.Display";

cout<<"\n4.Exit";

cout<<"\nEnter the choice";

cin>>ch;

switch(ch)

{

case 1:

cout<<"\nEnter the element to be pushed";

cin>>x;

s.push(x);

cout<<"\nThe element is inserted";

break;

case 2:

s.pop();

break;

case 3:

s.display();

case 4:

break;

}

}while(ch!=4);

getch();

}