Some special and important program of c language and c++

1-Write a program of Fibonaccci Series in C++ without Recursion.

Fabonaccci

#include <iostream>

using namespace std;

int main () {

int n1=0,n2=1,n3,i,number;

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

cin >>number;

cout <<n1<<" "<<n2<<" ";

for (i=2; i<number; ++i)

{

n3= n1+n2;

cout <<n3<<" ";

n1=n2;

n2=n3;

}

getch();

}

Output :- Enter the number of elements: 10

0 1 1 2 3 5 8 13 21 34

Some basic C language program using do while loop concept in C , C++ and java

2- Write a program of Fibonaccci Series in C++ with Recursion.

#include<iostream>

using namespace std;

void printFibonacci(int n){

static int n1=0, n2=1, n3;

if(n>0)

{

n3 = n1 + n2;

n1 = n2;

n2 = n3;

cout<<n3<<" ";

printFibonacci(n-1);

}

}

int main ()

{

int n;

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

cin>>n;

cout<<"Fibonacci Series: ";

cout<<"0 "<<"1 ";

printFibonacci(n-2);

return 0;

}

Output :- Enter the number of elements: 15

Fibonacci Series: 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377

3-Write a program of Prime Number Program in C++.

#include <iostream>

using namespace std;

int main()

{

int n, i, m=0, flag=0;

cout << "Enter the Number to check Prime: ";

cin >> n;

m=n/2;

for (i = 2; i <= m; i++)

{

If (n % i == 0)

{

cout<<"Number is not Prime."<<endl;

flag=1;

break;

}

}

if (flag==0)

cout << "Number is Prime."<<endl;

getch();

}

Output:- Enter the Number to check Prime: 17

Number is Prime.

4-Write a program Sum of digits algorithm in c++.

#include <iostream>

using namespace std;

int main ()

{

int n,sum=0,m;

cout <<"Enter a number: ";

cin >>n;

while(n>0)

{

m=n%10;

sum= sum+m ;

n=n/10;

}

cout<<"Sum is= "<<sum<<endl;

getch();

}

Output:- Enter a number: 624

Sum is= 12

5- Write a program to swap two numbers without using third variable.

#include < iostream >

using namespace std;

int main ()

{

int a=5, b=10;

cout<<"Before swap a= "<<a<<" b= "<<b<<endl;

a=a*b; //a=50 (5*10)

b=a/b; //b=5 (50/10)

a=a/b; //a=10 (50/5)

cout<<"After swap a= "<<a<<" b= "<<b<<endl;

return 0;

}

Output:- Before swap a= 5 b= 10

After swap a= 10 b= 5

Some basic programs of Operators in c language