Mar 16, 2012

C program to Demonstrate the Recursive function.

Write a C program to demonstrate the recursive function.
Recursion  is the programming technique that a process invoking itself again and again. In this program, We reverse the given number and checks it is a palindrome or not. Read more about C Programming Language .

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#include<stdio.h>
#include<conio.h>

int main(){
 clrscr();
 int num,num1,rev;
 printf("\nEnter a number :\n");
 scanf("%d",&num);
 num1=num;
 //call recursive function
 rev=reverse(num);

 printf("\nAfter reverse the number is :\n%d",rev);
 if(num1==rev){
  printf("\n\nNumber  %d is Palindrome\n",num1);
 }else
 {
  printf("\n\nNumber  %d is NOT a Palindrome\n",num1);
 }

 return 0;
}
int sum=0,r;
reverse(int num){
 if(num){
  r=num%10;
  sum=sum*10+r;
  reverse(num/10);
 }
 else
  return sum;
 return sum;
}

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