注：沒有額外宣告的結果均是在VC++環境中測試得到的結果。 1. sizeof 給出其運算元儲存位元組大小。 cout << " sizeof: " << endl; cout << "char = " << sizeof(char) << endl; //1 cout << "short int = " << sizeof(short int) << endl; //2 cout << "unsigned short = " << sizeof(unsigned short) << endl; //2 cout << "int = " << sizeof(int) <