CC++优先运算顺序.docVIP

OperatorDescriptionExampleOverloadableGroup 1(no associativity)::Scope resolution operatorClass::age = 2;NOGroup 2()Function callisdigit(1)YES()Member initalizationc_tor(int x, int y) : _x(x), _y(y*10){};YES[]Array accessarray[4] = 2;YES-Member access from a pointerptr-age = 34;YES.Member access from an objectobj.age = 34;NO++Post-incrementfor( int i = 0; i 10; i++ ) cout i;YES--Post-decrementfor( int i = 10; i 0; i-- ) cout i;YESconst_castSpecial castconst_casttype_to(type_from);NOdynamic_castSpecial castdynamic_casttype_to(type_from);NOstatic_castSpecial caststatic_casttype_to(type_from);NOreinterpret_castSpecial castreinterpret_casttype_to(type_from);NOtypeidRuntime type informationcout ? typeid(var).name();cout ? typeid(type).name();NOGroup 3(right-to-left associativity)!Logical negationif( !done ) …YESnotAlternate spelling for !~Bitwise complementflags = ~flags;YEScomplAlternate spelling for ~++Pre-incrementfor( i = 0; i 10; ++i ) cout i;YES--Pre-decrementfor( i = 10; i 0; --i ) cout i;YES-Unary minusint i = -1;YES+Unary plusint i = +1;YES*Dereferenceint data = *intPtr;YESAddress ofint *intPtr = data;YESnewDynamic memory allocationlong *pVar = new long;MyClass *ptr = new MyClass(args);YESnew []Dynamic memory allocation of arraylong *array = new long[n];YESdeleteDeallocating the memorydelete pVar;YESdelete []Deallocating the memory of arraydelete [] array;YES(type)Cast to a given typeint i = (int) floatNum;YESsizeofReturn size of an object or typeint size = sizeof floatNum;int size = sizeof(float);NOGroup 4-*Member pointer selectorptr-*var = 24;YES.*Member object selectorobj.*var = 24;NOGroup 5*Multiplicationint i = 2 * 4;YES/Divisionfloat f = 10.0 / 3.0;YES%Modulusint rem = 4 % 3;YESGroup 6+Additionint i = 2 + 3;YES-Subtractionint i = 5 - 1;YESGroup 7Bi