Updated to remove fmod and string length warnings

testStopwatch.c

@@ -47,7 +47,7 @@ int main(){
 	char* timerStr = getStrStopwatch(&timer);
 
 	//Print the results
-	printf("It took %u nanoseconds to run this program\n", getNanoStopwatch(&timer));
+	printf("It took %lu nanoseconds to run this program\n", getNanoStopwatch(&timer));
 	printf("It took %f microseconds to run this program\n", getMicroStopwatch(&timer));
 	printf("It took %f milliseconds to run this program\n", getMilliStopwatch(&timer));
 	printf("It took %f seconds to run this program\n", getSecondStopwatch(&timer));