132.try throw catch介紹
阿新 • • 發佈:2018-04-01
cin pac col space 嘗試 nbsp 定義 mes 錯誤
1 #include <iostream> 2 using namespace std; 3 4 //try嘗試執行,拋出throw,throw之後語句不再執行 5 //catch處理throw的異常 6 7 void main() 8 { 9 float fl1, fl2; 10 cin >> fl1 >> fl2; 11 12 //嘗試執行,拋出類型檢測 13 try 14 { 15 if (fl2 < 0.0000001) 16 { 17 throw 1; 18 } 19 else if (fl1 < 0.000001) 20 { 21 throw 2; 22 } 23 24 float fl3 = fl1 / fl2; 25 cout << fl3 << endl; 26 } 27 //定義類型,檢測判斷是什麽錯誤 28 catch (int code) 29 { 30 if (code == 1) 31 { 32 cout << "fl2太小" << endl; 33 } 34 else if (code == 2) 35 { 36 cout << "fl2太小" << endl; 37 } 38 } 39 40 41 cin.get(); 42 cin.get(); 43 }
132.try throw catch介紹