**Link for Downloading Full Program ****C++ version**

## Saturday, August 16, 2008

### ISC 2008 Reverse a string to check Palindrome through Recursion

### ISC 2007 Decimal to Binary conversion through Recursion

**Link for Downloading Full Program ****C++ version**

void recursive(int x)

int m=x%2;

x=x/2;

if(x>0) recursive(x);

z=z*10+m;

}

### ISC 2007 Digit to word conversion through Recursion

**Link for Downloading Full Program ****C++ version**

void extdigit(int x)

{

int m=x%10;

x=x/10;

if(x>0) extdigit(x);

numtoword(m);

}

void numtoword(int p)

{

char a[10][10]={"Zero","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};

cout< }

### ISC 2006 HCF and LCM through Recursion

int rechcf(int p,int q)

{

if(p==0) return q;

else return rechcf(q%p, p);

}

int fn_lcm(int p,int q, int gcd)

{

return p*q/gcd;

}

### ISC 2005 Fibonacci Series through Recursion

**Link for Downloading full program**** ****C++**

**VERSION I**

int fib(int n)

{

if(n==1) return 0;

else if(n==2) return 1;

else if(n>2) return fib(n-1)+fib(n-2);

else return -1;

}

loop from 1 to the limit

display fib(i)

fibrec()

{

a=0; b=1;

}

int fib(int n)

{

if(n>0)

{

c = a + b; a = b; b = c;

display c;

**
QUESTION BASED ON RECURSION**

Ques 1. A class Revstr defines a recursive function to reverse a string and check whether it is a Palindrome. .............

(ISC 2008 Link for full question )

Ques 2. Class Convert has been defined to express digits of an integer in words. .............

(ISC 2007 Link for full question )

Ques 3. A class dec_Bin has been defined to convert a decimal number into its equivalent binary number..............

(ISC 2007R Link for full question )

Ques 4. Class Hifact has been defined to to find the HCF of two numbers using the recursive technique. This HCF is used to find the LCM of the two numbers..............

(ISC 2006 Link for full question )

Ques 5. A class recursion is defined to find the fibonacci series upto the n terms...............

(ISC 2005 Link for full question )

Ques 6. Additional question( Link for full question )

Ques 7. Additional question( Link for full question )

## Tuesday, August 12, 2008

Ques 1. A class Revstr defines a recursive function to reverse a string and check whether it is a Palindrome. .............

(ISC 2008 Link for full question )

Ques 2. Class Convert has been defined to express digits of an integer in words. .............

(ISC 2007 Link for full question )

Ques 3. A class dec_Bin has been defined to convert a decimal number into its equivalent binary number..............

(ISC 2007R Link for full question )

Ques 4. Class Hifact has been defined to to find the HCF of two numbers using the recursive technique. This HCF is used to find the LCM of the two numbers..............

(ISC 2006 Link for full question )

Ques 5. A class recursion is defined to find the fibonacci series upto the n terms...............

(ISC 2005 Link for full question )

Ques 6. Additional question( Link for full question )

Ques 7. Additional question( Link for full question )

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