expanded binaryStrLen to determine length in case input is negative

src/conversionOfNumbers/conversionOfNumbers.c

@@ -5,11 +5,15 @@
 #include "conversionOfNumbers.h"
 
 int binaryStrLen(int input){
-    int length;
+    int length = 0;
     if (input == 0) return 1;
+    if (input < 0){
+        input *= -1;
+        length += 1;
+    }
     for (int x = 0; x <= input; x++){
         if(pow(2,x) >= input + 1){
-            length = x;
+            length += x;
             break;
             }
         }