Error during compilation of SDL test - c++

Question

I'm learning to programming with SDL2. Currently, I'm making a basic exercise. My program load a background image, and a complete sprite sheet on the background. But I'm having problems while executing the program. When I execute the binary, the program window closes immediately by itself; I cant see anything. I think it is a problem with the main loop, but it looks right for me. This is my code
#include "SDL.h"
void main () {
int gameover = 0;
SDL_Init(SDL_INIT_VIDEO);
SDL_Window* TheWindow;
SDL_Renderer* RenderEngine;
SDL_Surface* LoadedSurface;
SDL_Surface* LoadedImage;
SDL_Texture* CharacterImg;
SDL_Texture* BackgroundImg;
TheWindow = SDL_CreateWindow("Character Test",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 580, SDL_WINDOW_RESIZABLE);
RenderEngine = SDL_CreateRenderer( TheWindow, -1, SDL_RENDERER_ACCELERATED);
LoadedSurface= SDL_LoadBMP("./maptest.bmp");
BackgroundImg = SDL_CreateTextureFromSurface( RenderEngine, LoadedSurface);
SDL_FreeSurface(LoadedSurface);
LoadedImage = SDL_LoadBMP("./sprite.bmp");
CharacterImg = SDL_CreateTextureFromSurface( RenderEngine, LoadedImage);
SDL_FreeSurface(LoadedImage);
SDL_Event event;
while (!gameover)
{
if (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
gameover = 1;
break;
case SDL_KEYDOWN:
switch (event.key.keysym.sym) {
case SDLK_ESCAPE:
case SDLK_q:
gameover = 1;
break;
}
}
break;
}
SDL_RenderClear(RenderEngine);
SDL_RenderCopy(RenderEngine, BackgroundImg, NULL, NULL);
SDL_RenderCopy(RenderEngine, CharacterImg, 120, 80);
SDL_RenderPresent(RenderEngine);
}
SDL_Quit();
}

Answer 1

Your code will quit the while-loop if any SDL_PollEvent happens:
while (!gameover)
{
if (SDL_PollEvent(&event)) //Any SDL_PollEvent that gets into if...
{
switch (event.type)
{
case SDL_QUIT:
gameover = 1;
break;
case SDL_KEYDOWN:
switch (event.key.keysym.sym)
{
case SDLK_ESCAPE:
case SDLK_q:
gameover = 1;
break;
}
}
break; //...will eventually hit this break if it didn't break before
}
SDL_RenderClear(RenderEngine);
SDL_RenderCopy(RenderEngine, BackgroundImg, NULL, NULL);
SDL_RenderCopy(RenderEngine, CharacterImg, 120, 80);
SDL_RenderPresent(RenderEngine);
}