Fix compiler warnings in examples when using -std=c++98 -std=gnu89 -pedantic -Wreturn-type

Examples/lua/arrays/example.c

@@ -13,7 +13,7 @@ void sort_int(int* arr, int len)
   qsort(arr, len, sizeof(int), compare_int);
 }
 
-// ditto doubles
+/* ditto doubles */
 int compare_double(const void * a, const void * b)
 {
   return (int)( *(double*)a - *(double*)b );

Examples/lua/dual/dual.cpp

@@ -45,14 +45,14 @@ void testModule(lua_State *L)
   swig_type_info *pTypeInfo=0,*pTypeInfo2=0;
   swig_module_info *pModule=0;
   pModule=SWIG_GetModule(L);
-  DEBUG2("  SWIG_GetModule() returns %p\n",pModule)
+  DEBUG2("  SWIG_GetModule() returns %p\n", (void *)pModule)
   if(pModule==0) return;
   pTypeInfo = SWIG_TypeQuery(L,"Foo *");
   DEBUG2("  Type (Foo*) is %s\n",pTypeInfo==0?"unknown":"known");
-  DEBUG3("    Module %p typeinfo(Foo*) %p\n",pModule,pTypeInfo);
+  DEBUG3("    Module %p typeinfo(Foo*) %p\n", (void *)pModule, (void *)pTypeInfo);
   pTypeInfo2 = SWIG_TypeQuery(L,"Bar *");
   DEBUG2("  Type (Bar*) is %s\n",pTypeInfo2==0?"unknown":"known");
-  DEBUG3("    Module %p typeinfo(Bar*) %p\n",pModule,pTypeInfo2);
+  DEBUG3("    Module %p typeinfo(Bar*) %p\n", (void *)pModule, (void *)pTypeInfo2);
 }
 
 int main(int argc,char* argv[])

Examples/lua/embed2/embed2.c

@@ -53,7 +53,7 @@ int call_add(lua_State *L,int a,int b,int* res) {
   lua_getglobal(L, "add");               /* function to be called */
   if (!lua_isfunction(L,-1)) {
     printf("[C] error: cannot find function 'add'\n");
-    lua_settop(L,top);  // reset
+    lua_settop(L,top);
     return 0;
   }
   lua_pushnumber(L,a);
@@ -61,18 +61,18 @@ int call_add(lua_State *L,int a,int b,int* res) {
   if (lua_pcall(L, 2, 1, 0) != 0)  /* call function with 2 arguments and 1 result */
   {
     printf("[C] error running function `add': %s\n",lua_tostring(L, -1));
-    lua_settop(L,top);  // reset
+    lua_settop(L,top);
     return 0;
   }
-  // check results
+  /* check results */
   if (!lua_isnumber(L,-1)) {
     printf("[C] error: returned value is not a number\n");
-    lua_settop(L,top);  // reset
+    lua_settop(L,top);
     return 0;
   }
   *res=(int)lua_tonumber(L,-1);
   lua_settop(L,top);  /* reset stack */
-  return 1;   // ok
+  return 1;
 }
 
 /* This is a variargs call function for calling from C into Lua.

Examples/lua/functest/example.i

@@ -1,13 +1,12 @@
 /* File : example.i */
 %module example
 
-%include "typemaps.i" // you must have this for the typemaps for ptrs
-// basic function testing
-//
+%include "typemaps.i"
+
 %inline %{
-extern int add1(int x, int y);              // return x+y -- basic function test
-extern void add2(int x, int *INPUT, int *OUTPUT); // *z = x+*y  -- argin and argout test
-extern int add3(int x, int y, int *OUTPUT);    // return x+y, *z=x-y -- returning 2 values
-extern void add4(int x, int *INOUT);        // *y += x    -- INOUT dual purpose variable
+extern int add1(int x, int y);              /* return x+y -- basic function test */
+extern void add2(int x, int *INPUT, int *OUTPUT); /* *z = x+*y  -- argin and argout test */
+extern int add3(int x, int y, int *OUTPUT);    /* return x+y, *z=x-y -- returning 2 values */
+extern void add4(int x, int *INOUT);        /* *y += x    -- INOUT dual purpose variable */
 %}
 

Examples/lua/owner/example.cxx

@@ -39,12 +39,15 @@ Square* createSquare(double w)
     return new Square(w);
 }
 
-ShapeOwner::ShapeOwner() {printf("  ShapeOwner(%p)\n",this);}
+ShapeOwner::ShapeOwner() {
+  printf("  ShapeOwner(%p)\n", (void *)this);
+}
+
 ShapeOwner::~ShapeOwner()
 {
-    printf("  ~ShapeOwner(%p)\n",this);
-    for(unsigned i=0;i<shapes.size();i++)
-        delete shapes[i];
+  printf("  ~ShapeOwner(%p)\n", (void *)this);
+  for(unsigned i=0;i<shapes.size();i++)
+    delete shapes[i];
 }
 
 void ShapeOwner::add(Shape* ptr) // this method takes ownership of the object

Examples/lua/variables/example.c

@@ -52,9 +52,9 @@ void print_vars() {
   printf("cvar      = %c\n", cvar);
   printf("strvar    = %s\n", strvar ? strvar : "(null)");
   printf("cstrvar   = %s\n", cstrvar);
-  printf("iptrvar   = %p\n", iptrvar);
+  printf("iptrvar   = %p\n", (void *)iptrvar);
   printf("name      = %s\n", name);
-  printf("ptptr     = %p (%d, %d)\n", ptptr, ptptr ? ptptr->x : 0, ptptr ? ptptr->y : 0);
+  printf("ptptr     = %p (%d, %d)\n", (void *)ptptr, ptptr ? ptptr->x : 0, ptptr ? ptptr->y : 0);
   printf("pt        = (%d, %d)\n", pt.x, pt.y);
   printf("status    = %d\n", status);
 }