C:\Users\saturnman\cpp>g++ function_sizeof.cpp function_sizeof.cpp: In function 'int main()': function_sizeof.cpp:17:44: warning: invalid application of 'sizeof' to a void type function_sizeof.cpp:21:36: warning: invalid application of 'sizeof' to a void type 2.对于递归sizeof的违...
function_sizeof.cpp: In function 'int main()': function_sizeof.cpp:17:44: warning: invalid application of 'sizeof' to a void type function_sizeof.cpp:21:36: warning: invalid application of 'sizeof' to a void type 2.对于递归sizeof的违例 由于sizeof是在编译期计算,想想如果一个类成员大...
function可以包裹其对象structPrintNum{voidoperator()(inti)const{std::cout<<i<<'\n';}};intmain(...
SourceLocationLoc,QualTypeType,CharUnits&Size){// sizeof(void), __alignof__(void), sizeof(fun...
在C/C++中,sizeof()是一个判断数据类型或者表达式长度的运算符。 1sizeof定义 sizeof是C/C++中的一个操作符(operator),返回一个对象或者类型所占的内存字节数。 The sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type(including aggregate types). This keyword ...
[cpp] view plainint main(void) { FILE *stream; char list[30]; int i,numread,numwritten; /*open file in text mode:*/ if ((stream=fopen(“fread.out”,”w+t”))!=NULL) { for (i=0;i<25;i++) { list[i]=(char)(‘z’-i); ...
标准里规定, sizeof不能用在function type上.http://en.cppreference.com/w/cpp/language/sizeof sizeof cannot be used with function types, incomplete types, or bit-field glvalues. 但是gcc做了extension,https://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html In GNU C, addition and subtraction ope...
thesizeofoperator is applied to an array, it yields the total number of bytes in that array, not the size of the pointer represented by the array identifier. To obtain the size of the pointer represented by the array identifier, pass it as a parameter to a function that usessizeof. For...
The sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type(including aggregate types). This keyword returns a value of type size_t. ——来自MSDN 其返回值类型为size_t,在头文件stddef.h中定义为:typedef unsigned int size_t; ...
cpp #include <iostream> void printSizeOfArray(int arr[]) { std::cout << "Size of array in function: " << sizeof(arr) << std::endl; // 输出指针大小 } int main() { int myArray[] = {1, 2, 3, 4, 5}; std::cout << "Size of array...