分享128 c语言吧 松子在夜下唱歌 求助 这是什么问题a.cpp: In function ‘int main()’: a.cpp:5:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {scanf("%i",&a[i]); ^ a.cpp:6:21: warning: ignori...
From cppreference.com <cpp |language Statements Terminates the current function and returns the specified value (if any) to the caller. Syntax attr-(since C++11)sequence of any number ofattributes expression-expression, convertible to the function return type ...
unused-return-value-avoid-assignment.cpp 41 changes: 22 additions & 19 deletions 41 clang-tools-extra/clang-tidy/bugprone/UnusedReturnValueCheck.cpp Show comments View file Edit file Delete file Original file line numberDiff line numberDiff line change @@ -31,9 +31,16 @@ AST_MATCHER_P(...
// returnRvalueReference.cpp int&& returnRvalueReference() { return int{}; } int main() { auto myInt = returnRvalueReference(); }When compiled, the GCCcompiler complains immediately about a reference to a temporary (see Figure 4.6). To be precise, the lifetime of the temporary ends ...
Originally posted by @firewave in #84314 (comment) Here's an example: #include <string> class C { public: void setS(const char* s) { mS = s; } private: std::string mS; }; test.cpp:6:9: error: the value returned by this function should not be disregarded; neglecting it may le...
ID: cpp/assignment-does-not-return-this Kind: problem Security severity: Severity: warning Precision: high Tags: - reliability - readability - language-features - external/jsf Query suites: - cpp-security-and-quality.qls Click to see the query in the CodeQL repositoryThis rule finds assignment...
typedef __false_ has_trivial_assignment_operator; typedef __false_ has_trivial_destructor; typedef __false_ is_POD_type; };#endif//__MY_TRAITS/*end of my_traits.h*/ 通常为某些可以批量初始化的容器而设计的fill和copy函数,通过type_traits提取出具体的类型信息,并区别对待: ...
// smallobj.cpp: // #include <iostream> using namespace std; class small { public: small(int n) : value(n) {} int getValue() const { return value; } int operator++() { return ++value; } friend ostream &operator<<(ost ream &os, const small &s) { return os << s.value; ...
Today wecontinuethe series by looking at a pair of powerful, related features in C# 7.3:refreturn values and local variables. These enable some great optimizations, so let’s look at the IL2CPP output for them to make sure it’s as good as it looks. ...
the assignment that my teacher instruct: Write templates for the two functions minimum and maximum. The minimum function should accept two arguments and return the value of the argument that is the lesser of the two. The maximum function should accept two arguments and return the value of the ...