Finished General Utility

+- GeneralUtility.c

PA10-1115/GeneralUtility.c

@@ -28,8 +28,20 @@ Dependencies: privateGetStringLength
 */
 int privateCompareStrings( const char *leftStr, const char *rightStr )
 {
-   // return zero (temp)
-   return 0;
+   int diff, index = 0;
+   int leftStrLen = privateGetStringLen(leftStr);
+   int rightStrLen = privateGetStringLen(rightStr);
+
+   while (index < leftStrLen && index < rightStrLen)
+   {
+      diff = leftStr[index] - rightStr[index];
+      if (diff != 0)
+      {
+         return diff;
+      }
+      index = index + 1;
+   }
+   return leftStrLen - rightStrLen;
 }
 
 /*
@@ -44,6 +56,17 @@ Dependencies: none
 */
 void privateCopyString( char *dest, const char *source )
 {
+   int characterCount = 0;
+   // use a while loop, check for !NULL_CHAR
+   while (source[characterCount] != NULL_CHAR)
+   {
+      // copy the character accessed into dest string
+      dest[characterCount] = source[characterCount];
+      // iterate the number of characters
+      characterCount = characterCount + 1;
+   }
+   // add a NULL_CHAR once done, characterCount is in the right place for \0
+   dest[characterCount] = NULL_CHAR;
    // no return, void.
 }
 
@@ -59,8 +82,15 @@ Dependencies: none
 */
 int privateGetStringLength( const char *str )
 {
-   // return zero (temp)
-   return 0;
+   int strLen = 0;
+   // while through string until hit null.
+   while (str[strLen] != NULL_CHAR)
+   {
+      // increment the length string iterator
+      strLen = strLen + 1;
+   }
+   // return strLen
+   return strLen;
 }
 
 /*
@@ -76,6 +106,11 @@ Dependencies: toPower (recursively)
 */
 int privateToPower( int base, int exponent )
 {
-   // return zero (temp)
-   return 0;
+   // if the exponent is 0, return one.
+   if(exponent == 0)
+   {
+      return 1;
+   }
+   // if not, then return base * privateToPower(base, exponent - 1)
+   return base * privateToPower(base, exponent - 1);
 }