# Answer to Question #49714 in C++ for nada

Question #49714

Write the following program:

A. Write a value‐returning function called length() that takes a positive integer and returns the number of digits in that integer.

B. Using the written function in part A, write a value‐returning function called isPalindrome() that checks if a positive integer is a palindrome or not. A number is palindrome if it reads the same left to right and right to left. For example 23432 is a palindrome, while 5675 is not palindrome. The function takes a positive integer and returns true if the integer is a palindrome and false otherwise.

Test your functions by writing a main function that prompts the user to input an integer and outputs its number of digits and "It Is a Palindrome" message if it is a palindrome, otherwise "It Is not a Palindrome".

A. Write a value‐returning function called length() that takes a positive integer and returns the number of digits in that integer.

B. Using the written function in part A, write a value‐returning function called isPalindrome() that checks if a positive integer is a palindrome or not. A number is palindrome if it reads the same left to right and right to left. For example 23432 is a palindrome, while 5675 is not palindrome. The function takes a positive integer and returns true if the integer is a palindrome and false otherwise.

Test your functions by writing a main function that prompts the user to input an integer and outputs its number of digits and "It Is a Palindrome" message if it is a palindrome, otherwise "It Is not a Palindrome".

Expert's answer

**#include<stream.h>**

**#include<conio.h>**

**int length(int n)**

**{**

**int i=0;**

**while(n>0)**

**{**

**n/=10;**

**i++;**

**}**

**return i;**

**}**

**int isPalindrome(intn)**

**{**

**int i;**

**int len=length(n);**

**int*mas=(int* )malloc(len);**

**for(i=0;i<len;i++)**

**{**

**mas[i]=n;**

**n=n/10;**

**}**

**for(i=0;i<len/2;i++)**

**if(mas[i]!=mas[len-1-i])**

**return 0;**

**return 1;**

**}**

**int main()**

**{**

**int n;**

**cout<<"Input n: ";**

**cin>>n;**

**if(isPalindrome(n))**

**cout<<"It Is aPalindrome";**

**else**

**cout<<"It Is not aPalindrome";**

**getch();**

**return 1;**

**}**

``

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