如何在单个案例中使异常处理跨越多个catch块？
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假设您具有以下层次结构。您有一个基类Animal，其中有一堆子类，例如Cat，Mouse，Dog等。
现在，我们有以下情形：
void ftn()
{
throw Dog();
}
int main()
{
try
{
ftn();
}
catch(Dog &d)
{
//some dog specific code
}
catch(Cat &c)
{
//some cat specific code
}
catch(Animal &a)
{
//some generic animal code that I want all exceptions to also run
}
}
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稀瓣囊
void handle(Animal const & a) { // ... } int main() { try { ftn(); } catch(Dog &d) { // some dog-specific code handle(d); } // ... catch(Animal &a) { handle(a); } }帆攀缺锯欧
void ftn(){ throw Dog(); } int main(){ try{ try{ ftn(); }catch(Dog &d){ //some dog specific code throw; // rethrows the current exception }catch(Cat &c){ //some cat specific code throw; // rethrows the current exception } }catch(Animal &a){ //some generic animal code that I want all exceptions to also run } }