50 lines
1 KiB
C
50 lines
1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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struct palindrome_info {
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int a;
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int b;
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int palindrome;
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};
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int makepalindrome(int n) {
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int p = n*1000;
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p += 100 * (n%10);
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p += 10 * ((n/10)%10);
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p += (n/100)%10;
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return p;
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}
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struct palindrome_info* largestpalindrome() {
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struct palindrome_info* info = malloc(sizeof(struct palindrome_info));
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info->a = 0;
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info->b = 0;
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info->palindrome = 0;
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int p,a;
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for(int i = 999; i > 0; i--) {
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p = makepalindrome(i);
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a = 999;
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while(a > 0 && p%a != 0) a--;
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if(a > 0 && p/a < 1000) {
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info->palindrome = p;
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info->a = a;
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info->b = p/a;
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return info;
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}
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}
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free(info);
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return NULL;
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}
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int main( int argc, char *argv[] ) {
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struct palindrome_info* info = largestpalindrome();
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if(info != NULL) {
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printf("A: %d\n",info->a);
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printf("B: %d\n",info->b);
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printf("Palindrom: %d\n",info->palindrome);
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free(info);
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}
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return 0;
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}
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