C++ 速查手冊 V1.00 - 單元 6 範例

u06.cpp

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#include <iostream>    int main() {    int a = 12         std::cout << a << std::endl;      return 0; }    /* Kaiching Chang    u06.cpp    2014-02 */

u0601_1.cpp

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#include <iostream>   int main() {    int i = -1;      try {       if (i < 0) {          throw "something wrong...";       }    }    catch (const char* message) {       std::cout << message                 << std::endl;    }      return 0; }    /* Kaiching Chang    u0601_1.cpp    2014-02 */

u0601_2.cpp

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#include <iostream>   struct BadValue : public std::exception {};   double divide(double a, double b) {    if (b == 0) {       throw BadValue();    }      return a / b;  }   int main() {    try {       std::cout << divide(20, 5)                 << std::endl;       std::cout << divide(20, 4)                 << std::endl;       std::cout << divide(20, 3)                 << std::endl;       std::cout << divide(20, 2)                 << std::endl;       std::cout << divide(20, 1)                 << std::endl;       std::cout << divide(20, 0)                 << std::endl;    }    catch (BadValue e) {       std::cout << "something wrong..."                 << std::endl;    }      return 0; }    /* Kaiching Chang    u0601_2.cpp    2014-02 */

u0602.cpp

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#include <iostream>   int main() {    int i = -1;      try {       if (i > 0) {          throw 0;       }       throw 2.0;    }    catch (const int e) {       std::cout << e                 << std::endl;    }    catch (...) {       std::cout << "something wrong"                 << std::endl;    }      return 0; }    /* Kaiching Chang    u0602.cpp    2014-02 */

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