C++ 速查手冊 V1.00 - 單元 12 範例

u1201.cpp

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

#include <iostream>    int main() {    char a = 'a';    short b = 5;    int c = 156;    long d = 5;    float e = 9.8;    double f = 12.5;          if (b) {       std::cout << "short => bool, "                 << typeid(b).name()                 << std::endl;    }    std::cout << "char => int, "              << (a / b)              << ", "              << typeid(a / b).name()              << std::endl;    std::cout << "short => long, "              << (b * d)              << ", "              << typeid(b * d).name()              << std::endl;    std::cout << "int => float, "              << (c / e)              << ", "              << typeid(c / e).name()              << std::endl;    std::cout << "double => int, "              << (c = f)               << ", "              << typeid(c).name()              << std::endl;      return 0; }   /* Kaiching Chang    u1201.cpp    2014-02 */

u1202.cpp

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

#include <iostream>    int main() {    char a = 'a';    int b = 97;      std::cout << a              << std::endl;    std::cout << b              << std::endl;    std::cout << static_cast<char>(b)              << std::endl;    std::cout << static_cast<int>(a)              << std::endl;      return 0; }   /* Kaiching Chang    u1202.cpp    2014-02 */

the end