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C++賦值運算子
嘗試以下示例以瞭解 C++ 中可用的所有賦值運算子。
將以下 C++ 程式複製並貼上到 test.cpp 檔案中,然後編譯並執行此程式。
#include <iostream> using namespace std; main() { int a = 21; int c ; c = a; cout << "Line 1 - = Operator, Value of c = : " <<c<< endl ; c += a; cout << "Line 2 - += Operator, Value of c = : " <<c<< endl ; c -= a; cout << "Line 3 - -= Operator, Value of c = : " <<c<< endl ; c *= a; cout << "Line 4 - *= Operator, Value of c = : " <<c<< endl ; c /= a; cout << "Line 5 - /= Operator, Value of c = : " <<c<< endl ; c = 200; c %= a; cout << "Line 6 - %= Operator, Value of c = : " <<c<< endl ; c <<= 2; cout << "Line 7 - <<= Operator, Value of c = : " <<c<< endl ; c >>= 2; cout << "Line 8 - >>= Operator, Value of c = : " <<c<< endl ; c &= 2; cout << "Line 9 - &= Operator, Value of c = : " <<c<< endl ; c ^= 2; cout << "Line 10 - ^= Operator, Value of c = : " <<c<< endl ; c |= 2; cout << "Line 11 - |= Operator, Value of c = : " <<c<< endl ; return 0; }
編譯並執行上述程式碼後,將產生以下結果:
Line 1 - = Operator, Value of c = : 21 Line 2 - += Operator, Value of c = : 42 Line 3 - -= Operator, Value of c = : 21 Line 4 - *= Operator, Value of c = : 441 Line 5 - /= Operator, Value of c = : 21 Line 6 - %= Operator, Value of c = : 11 Line 7 - <<= Operator, Value of c = : 44 Line 8 - >>= Operator, Value of c = : 11 Line 9 - &= Operator, Value of c = : 2 Line 10 - ^= Operator, Value of c = : 0 Line 11 - |= Operator, Value of c = : 2
cpp_operators.htm
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