程序立即在SDL中关闭

我试图在SDL 1.2中构建我的第一个程序只是为了熟悉SDL。我很头疼，想了解为什么我的程序立即关闭。

这和我的编译方式有关吗？

这是我所有的代码，不必担心尝试查找与手头的错误无关的逻辑错误。我只是想找出为什么程序在启动时立即关闭。

Guy.h：

#ifndef GUY_H
#define GUY_H

class Guy{
    public:
        Guy(int, int);
        void move();
        void adjustVelocity(int, int);
        int getX();
        int getY();
        int getXVel();
        int getYVel();
    private:
        int xPos, yPos, xVel, yVel;
};
#endif

Guy.cpp：

#include "Guy.h"

Guy::Guy(int x, int y){
    xPos = x;
    yPos = y;
}
void Guy::move(){
    xPos += xVel;
    yPos += yVel;
}
void Guy::adjustVelocity(int x, int y){
    xVel += x;
    yVel += y;
}
int Guy::getX(){
    return xPos;
}
int Guy::getY(){
        return yPos;
}
int Guy::getXVel(){
    return xVel;
}
int Guy::getYVel(){
    return yVel;
}

main.cpp：

#include "SDL/SDL.h"
#include "SDL/SDL_image.h"
#include "Guy.h"
#include <string>
#include <iostream>

bool init();
bool loadAllFiles();
void paintScreen();
void update();
bool handle();
void cleanUp();

void addSurface(int, int, SDL_Surface*, SDL_Surface*, SDL_Rect* clip = NULL);
SDL_Surface* loadFile(std::string);
SDL_Surface* Screen;
SDL_Surface* BackgroundIMG;
SDL_Surface* GuyIMG;
Guy* Hunter;


int main(int argc, char* args[]){
    std::cout << "Why won't it even cout this?? :(" << endl;
    if(!init()){
        return 1;
    }
    if(!loadAllFiles()){
        return 2;
    }
    Hunter = new Guy(0,0);
    paintScreen();
    while(handle()){
        update();
    }

    cleanUp();
    return 0;

    SDL_Init(SDL_INIT_EVERYTHING);
    Screen = SDL_SetDisplayMode(640, 480, 32, SDL_SWSURFACE);
    SDL_Flip(Screen);
    SDL_Delay(1000);
}

bool init(){
    if(SDL_Init(SDL_INIT_EVERYTHING)==-1){
        return false;
    }
    Screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
    if(Screen==NULL){
        return false;
    }
    SDL_WM_SetCaption("First SDL Test On Own", NULL);
    return true;
}

bool loadAllFiles(){
    BackgroundIMG = loadFile("Background.png");
    GuyIMG = loadFile("Guy.png");
    if(BackgroundIMG==NULL || GuyIMG==NULL){
        return false;
    }
    else{
        return true;
    }
}

void paintScreen(){
    addSurface(0, 0, BackgroundIMG, Screen);
    addSurface(Hunter->getX(), Hunter->getY(), GuyIMG, Screen);
    SDL_Flip(Screen);
}

void update(){
    Hunter->move();
    addSurface(Hunter->getX(), Hunter->getY(), GuyIMG, Screen);
    SDL_Flip(Screen);
}

bool handle(){ 
    SDL_Event event;
    while(SDL_PollEvent(&event)){
        if(event.type==SDL_QUIT){
            return false;
        }
        else if(event.type==SDL_KEYDOWN){
            switch(event.key.keysym.sym){
                case SDLK_UP:
                    Hunter->adjustVelocity(0, -1);
                    break;
                case SDLK_DOWN:
                    Hunter->adjustVelocity(0, 1);
                    break;
                case SDLK_RIGHT:
                    Hunter->adjustVelocity(1, 0);
                    break;
                case SDLK_LEFT:
                    Hunter->adjustVelocity(-1, 0);
                    break;
            }
        }
    }
    return true;
}

void cleanUp(){
    SDL_FreeSurface(GuyIMG);
    SDL_FreeSurface(BackgroundIMG);
    SDL_Quit();
    delete Hunter;
}



void addSurface(int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip){
    SDL_Rect offset;
    offset.x = x;
    offset.y = y;
    SDL_BlitSurface(source, clip, destination, &offset);
}

SDL_Surface* loadFile(std::string s){
    SDL_Surface* surface = IMG_Load(s.c_str());
    if(surface==NULL){
        return NULL;
    }
    else{
        SDL_Surface* opsurface = SDL_DisplayFormat(surface);
        SDL_FreeSurface(surface);
        return opsurface;
    }
}

我的makefile：

all: main.o
        g++ -o run main.o Guy.o -lSDL -lSDL_image
main.o: Guy.o
        g++ -c main.cpp
Guy.o:
        g++ -c Guy.cpp

每当使用此makefile对其进行编译时，都不会出错。