@文心快码BaiduComatesizeof on array function parameter will return size of 'int *' instead of 'i 文心快码BaiduComate 在C和C++中,数组作为函数参数时的行为是一个常见且重要的概念。下面我将根据你的要求,分点解释这个问题。 1. 解释数组作为函数参数时的行为 当数组作为函数参数时,它实际上会退化为指向...
中文含义:sizeof使用数组作为参数时会返回int*大小(指针的字节数),即使用sizeof测试数组类型的参数大小时得到的并不是整个数组的字节数,而是指针的字节数(数组被退化为指针使用sizeof) 原因是数组作为参数传给函数时,是传给数组首个元素的地址,而不是传给整个的数组空间,因此 sizeof(arr)这句话会报错...
1.c:4:25: warning: ‘sizeof’ on array function parameter ‘a’ will return size of ‘int ...
#include <iostream> #include <cstring> using namespace std; void size_of(char arr[]) { cout << sizeof(arr) << endl; // warning: 'sizeof' on array function parameter 'arr' will return size of 'char*' . cout << strlen(arr) << endl; } int main() { char arr[20] = "hello...
r += sizeof (ap) / sizeof (char); /* { dg-warning ".sizeof. on array function parameter" } */ const char arr3[] = "foo"; r += sizeof (arr3) / sizeof(char); r += sizeof (arr3) / sizeof(int); r += sizeof (arr3) / sizeof (*arr3); int arr4[5][5]; r ...
An operand can be any of the following kinds of data items: Constant Variable Array element Function Substring Structured record field (if it evaluates to a scalar data item) An expression ok, I see the logical progression, I have never seen a elemental function in a parameter, that I ...
CM_EISA_FUNCTION_INFORMATION structure CM_EISA_SLOT_INFORMATION structure CM_FLOPPY_DEVICE_DATA structure CM_FULL_RESOURCE_DESCRIPTOR structure CM_INT13_DRIVE_PARAMETER structure CM_KEYBOARD_DEVICE_DATA structure CM_MCA_POS_DATA structure CM_PARTIAL_RESOURCE_DESCRIPTOR structure CM_PARTIAL_RESOURCE_LIST ...
The sizeof() function returns the number of elements in an array.The sizeof() function is an alias of the count() function.Syntaxsizeof(array, mode) Parameter ValuesParameterDescription array Required. Specifies the array mode Optional. Specifies the mode. Possible values: 0 - Default. Does ...
ERROR: accepted.cpp:Infunction'int Test(int*, int, int)':accepted.cpp:6:9:error:declaration of'int length'shadows a parameterintlength=sizeof(a)/sizeof(a[0]);^accepted.cpp:6:26:warning:'sizeof'on array function parameter'a'willreturnsize of'int*'[-Wsizeof-array-argument]intlength=s...
在C语言中,数组作为函数参数时将退化为指针。 #include<stdio.h>//Sizeof on array function parameter will return size of 'int *' instead of 'int []'intsizeofArray(intarray[]){returnsizeof(array);}intmain(intargc,constchar*argv[]){// insert code here...intdata1[]={1,2,3,4,5};si...