IOS 开发中，我知道的两个退出程序的方法：
1.
exit(0);2.
if([[UIApplication sharedApplication] respondsToSelector:@selector(terminateWithSuccess)]){
[[UIApplication sharedApplication] performSelector:@selector(terminateWithSuccess)];
}
IOS开发退出应用程序的代码
2.
if([[UIApplication sharedApplication] respondsToSelector:@selector(terminateWithSuccess)]){
[[UIApplication sharedApplication] performSelector:@selector(terminateWithSuccess)];
}