Palindrome(迴文數) Tester
A palindrome is a number or a text phrase that reads the same backward as forward. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a program that reads in a five-digit integer and determines whether or not it’s a palindrome. [Hint: Use the division and remainder operators to separate the number into its individual digits.]
Input Specification:
one 5-digit-integer.
Output Specification:
(the value of the number) is (/is not) a Palindrome number!
Sample Input 1:
12321
Sample Output 1:
12321 is a Palindrome number!
Sample Input 2:
12345
Sample Output 2:
12345 is not a Palindrome number!
解答：
#include<stdio.h>
#include<math.h>
int main()
{
int number;
int temp;
int another = 0;
int i, n;
scanf("%d", &number);
temp = number;
n = floor(log10(number)) + 1;
for(i=1; i<=n; i++) {
another = another * 10 + temp % 10;
temp /= 10;
}
if (number == another) printf("%d is a Palindrome number!\n", number);
else printf("%d is not a Palindrome number!\n", number);
return 0;
}