PROGRAM TO PRINT FOLLOWING OUTPUT..

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5 

INPUT--

#include <iostream>
using namespace std;
int main()
{
    int i,j,rows;
    cout<<"Enter the number of rows: ";
    cin>>rows;
    for(i=1;i<=rows;++i)
    {
        for(j=1;j<=i;++j)
        {
           cout<<j<<" ";
        }
        cout<<"\n";
    }
    return 0;
}

OUTPUT--

Enter the number of rows: 5
1

1 2 

1 2 3

1 2 3 4

1 2 3 4 5

PROGRAM TO GENERATE FIBONACCI SERIES..

INPUT--

#include <iostream>

using namespace std;

int main()

{

    int t1 = 0, t2 = 1, nextTerm = 0, n;

    cout << "Enter a positive number: ";

    cin >> n;

    // displays the first two terms which is always 0 and 1

    cout << "Fibonacci Series: " << t1 << ", " << t2 << ", ";

    nextTerm = t1 + t2;

    while(nextTerm <= n)

    {

        cout << nextTerm << ", ";

        t1 = t2;

        t2 = nextTerm;

        nextTerm = t1 + t2;

    }

    return 0;

}                        

OUTPUT--

Enter a positive integer: 100

Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89,

PROGRAM TO FIND FACTORIAL OF GIVEN NUM.

INPUT--

#include <iostream>

using namespace std;

int main()

{

    unsigned int n;

    unsigned long long factorial = 1;

    cout << "Enter a positive integer: ";

    cin >> n;

    for(int i = 1; i <=n; ++i)

    {

        factorial *= i;

    }

    cout << "Factorial of " << n << " = " << factorial;    

    return 0;

}

OUTPUT--

Enter a positive integer: 12

Factorial of 12 = 479001600

PROGRAM TO FIND ODD OR EVEN NUMB. USING IF....ELSE

INPUT--

#include<iostream.h>

#include<conio.h>

void main()

{

       int no;

       clrscr();

       cout<<"Enter any num: ";

       cin>>no;

       if(no%2==0)

      { 

               cout<<"Even num";

      }

      else

     {

              cout<<"Odd num";

     }

     getch();

}

OUTPUT--

Enter any num : 5

Odd num

WRITE A PROGRAM TO CHECK NUMBER IS +VE & -VE

INPUT--

#include<iostream>

using namespace std;

int main()

{

int a;

cout<<"Enter any non-zero Number : ";

cin>>a;

(a>0)?cout<<"Number is positive":cout<<"Number is negative";

return 0;

}

OUTPUT--

EXAMPLE--1-->

Enter any non-zero Number : 56

Number is positive

EXAMPLE--2-->

Enter any non-zero Number : -14

Number is negative

PROGRAM TO PRINT FOLLOWING OUTPUT..

A
B B
C C C
D D D D
E E E E E

INPUT--

 #include <iostream>
using namespace std;
int main()
{
    int i,j;
    char input,temp='A';
    cout<<"Enter uppercase character you want in triange at last row: ";
    cin>>input;
    for(i=1;i<=(input-'A'+1);++i)
    {
        for(j=1;j<=i;++j)
           cout<<temp<<" ";
        ++temp;
        cout<<endl;
    }
    return 0;

}

OUTPUT--

Enter uppercase character you want in triange at last row:

A

B B

C C C

D D D D

E E E E E

PROGRAM TO PRINT GET FOLLOWING OUTPUT..

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

INPUT--

#include <iostream>

using namespace std;

int main()

{

    int i,j,rows;

    cout<<"Enter the number of rows: ";

    cin>>rows;

    for(i=1;i<=rows;++i)

    {

        for(j=1;j<=i;++j)

        {

           cout<<j<<" ";

        }

        cout<<"\n";

    }

    return 0;

}

OUTPUT--

Enter the number of rows:

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5