探尋異常C++

   C++的異常,前幾天看到的.寫出來了.

// studyException.cpp -- 2011-08-23-18.53#include "stdafx.h"#include <iostream>using std ::runtime_error ;using std ::cout ;using std ::endl ;int bodyWeight (void) ;int _tmain(int argc, _TCHAR* argv[]){try{//Get a positive integer from a function called.//I conclude it will not to be a negative integer.//So I inspect it in following cood block.int i = bodyWeight() ;if (i < 0){//No one has a negative body weight value.throw runtime_error ("No one has a negative body weight value.") ;}}catch (runtime_error err){//Process runtime_error exception here.cout << err.what() << endl ;exit(-1) ;}return 0 ;}int bodyWeight (void){return -1 ;}