Added prototypes to stop errors when Ninja.

examples/example_4/test/TestProductionCode.c

@@ -17,6 +17,12 @@ void tearDown(void)
 {
 }
 
+void test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void);
+void test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken(void);
+void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue(void);
+void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void);
+void test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void);
+
 void test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void)
 {
   /* All of these should pass */

examples/example_4/test/TestProductionCode2.c

@@ -15,6 +15,10 @@ void tearDown(void)
 {
 }
 
+void test_IgnoredTest(void);
+void test_AnotherIgnoredTest(void);
+void test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented(void);
+
 void test_IgnoredTest(void)
 {
     TEST_IGNORE_MESSAGE("This Test Was Ignored On Purpose");