Merge pull request #30 from diego95root/master

Add Diego Bernal

SOLUTIONS/Largest Palindrome.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(){
+  int cases, len, pal = 0, num, i;
+  char n[10];
+  scanf("%i", &cases);
+  for (;cases!=0;cases--){
+    scanf("%9s", n);
+    for (len=0;n[len]!='\0';len++);
+    num = atoi(n); // to decrease number
+    while (pal == 0){ // while no palindrome keep searching
+      sprintf(n, "%i", (num-1));
+      for (i = 0; i<len/2;i++){ // check if number is palindrome, else break and other number
+        if (n[len-1-i] == n[i]){ pal = 1 }
+        else {
+          pal = 0;
+          break;
+        }
+      }
+      num = atoi(n); // array to int to be able to decrease num
+    }
+    if (pal == 1){
+      printf("%d\n", num);
+      cases = len = pal = num = 0; // reinitialize everything so that results don't influence each other
+    }
+  }
+}