sol.c File Reference

Problem 4 solution More...

#include <stdio.h>

Include dependency graph for sol.c:

Functions
int	is_palindromic (unsigned int n)
	Check if number is palindromic.
int	main (void)
	Main function.

Detailed Description

Problem 4 solution

Function Documentation

is_palindromic()

int is_palindromic

(

unsigned int

n

)

Check if number is palindromic.

Parameters

[in]

n

number to check

Returns

1 if palindromic

0 if not palindromic

{
    unsigned int reversed = 0, t = n;
 
    while (t > 0)
    {
        reversed = 10 * reversed + (t % 10);
        t /= 10;
    }
    return reversed == n;
}

main()

int main

(

void

)

Main function.

{
    unsigned int i, j, max = 0;
    for (i = 100; i <= 999; i++)
    {
        for (j = 100; j <= 999; j++)
        {
            unsigned int p = i * j;
            if (is_palindromic(p) && p > max)
            {
                max = p;
            }
        }
    }
    printf("%u\n", max);
    return 0;
}

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