针对您提出的Keil编译器中的错误 #132: expression must have pointer-to-struct-or-union type,这个错误通常是由于尝试对不是指向结构体或联合体的指针进行解引用操作所导致的。以下是一些可能的解决步骤和代码示例,帮助您解决这个问题: 1. 理解错误并定位问题 首先,您需要找到触发这个错误的代码行。在Keil的编译输...
(52): error: expression must have pointer-to-struct-or-union type return atomic_load((const _Atomic(void *)*)obj); ^ In file included from ../numpy/_core/src/common/npy_import.h(7), from ../numpy/_core/src/multiarray/common.h(12), from ../numpy/_core/src/multiarray/buffer.c(...
因为子文件中引用主程序定义的结构体出错。解决:将子程序文件中 子函数移至主文件。结构体也是一种数据类型，只不过在这种数据类型中又包含了几个基本的数据类型。构体变量在内存中的存放和基本数据类型变量在内存中的存放是不同的，基本数据类型的存放系统是会给分配一块连续的空间用来存放，而结构体...
expression must have pointer to object type “expression must have pointer to object type”是C++编译器报错信息,意味着表达式必须是指向对象的指针类型。 在C++中,指针是指向内存中某个变... C++中typeid出现 expression must have pointer type 如何解决。谢谢。 这里this是个当前类的对象的指针,如果要用>可以...
pointer_to_object.class_member; 相反,由于涉及到指针,我们应该使用箭头 (->) 运算符,如下所示: pointer_to_object->class_member; 让我们对有问题的代码进行此更改并重新运行它。 可以看到这次代码运行良好。 #include<iostream>usingnamespacestd;classDeserts{public:voiddesert(){cout<<"Have a cake!"<<end...
After compiling I have an error: #28 expression must have a constant value. I do not know how to solve it. Can anyone help me ? STATUSswitch_stats_example( api_device_t *only_device ) { UINT8port1 = 1; sc_read_ctrs_in_tread_in = {RIO_ALL...
Thus, can we say that the pointer is trying to find something that does not even exist? Absolutely yes, and that is why we get the error. We can fix theexpression must have class type errorin C++ in two ways. Let us discuss them one by one. ...
int freq; string code; string* pointerContent; }; void* frequency(void* inputContents){ struct variables* contents = (struct variables*) inputContents; /*Step (2)*/ std::map<char, int> priorityMap; std::map<char, int>::iterator priorityItr; for...
Ifstrandexpressionare string arrays or cell arrays, they must have the same dimensions. Data Types:string|char|cell expression—Regular expression character vector|cell array of character vectors|string array Regular expression, specified as a character vector, a cell array of character vectors, or ...
expression must have integral or unscoped enum type? expression must have pointer-to-object or handle-to-C++/CLI-array type Problem Expression:(L"Buffer is too small" &&0) error from strcpy_s() function Extract String from EXE Extract strings from process memory f:\dd\vctools\vc7libs\ship...