SDL_Init returns 0 on success but any negative number can be

returned  on failure, not just -1

Author: Twinklebear

Diff for: Lesson0/src/main.cpp

@@ -9,7 +9,7 @@
 * Lesson 0: Test to make sure SDL is setup properly
 */
 int main(int argc, char **argv){
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson1/src/main.cpp

@@ -10,7 +10,7 @@
 */
 int main(int argc, char** argv){
 	//First we need to start up SDL, and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson2/src/main.cpp

@@ -61,7 +61,7 @@ void ApplySurface(int x, int y, SDL_Texture *tex, SDL_Renderer *rend){
 
 int main(int argc, char** argv){
 	//Start up SDL and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson3/src/main.cpp

@@ -56,7 +56,7 @@ void ApplySurface(int x, int y, SDL_Texture *tex, SDL_Renderer *rend){
 
 int main(int argc, char** argv){
 	//Start up SDL and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson4/src/main.cpp

@@ -56,7 +56,7 @@ void ApplySurface(int x, int y, SDL_Texture *tex, SDL_Renderer *rend){
 
 int main(int argc, char** argv){
 	//Start up SDL and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson5/src/main.cpp

@@ -62,7 +62,7 @@ void ApplySurface(int x, int y, SDL_Texture *tex, SDL_Renderer *rend, SDL_Rect *
 
 int main(int argc, char** argv){
 	//Start up SDL and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson6/src/main.cpp

@@ -84,7 +84,7 @@ void ApplySurface(int x, int y, SDL_Texture *tex, SDL_Renderer *rend){
 
 int main(int argc, char** argv){
 	//Start up SDL and make sure it went ok
-	if (SDL_Init(SDL_INIT_EVERYTHING) == -1){
+	if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
 		std::cout << SDL_GetError() << std::endl;
 		return 1;
 	}

Diff for: Lesson7/src/window.cpp

@@ -28,7 +28,7 @@ SDL_Rect Window::mBox;
 
 void Window::Init(std::string title){
     //initialize all SDL subsystems
-    if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
+    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
 		throw std::runtime_error("SDL Init Failed");
     if (TTF_Init() == -1)
 		throw std::runtime_error("TTF Init Failed");

Diff for: Lesson8/src/window.cpp

@@ -32,7 +32,7 @@ Window::~Window(){
 }
 void Window::Init(std::string title){
     //initialize all SDL subsystems
-    if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
+    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
 		throw std::runtime_error("SDL Init Failed");
     if (TTF_Init() == -1)
 		throw std::runtime_error("TTF Init Failed");