这一段代码在本菜鸟看来,貌似人畜无害,只是把谓词函数cmp写成了类内函数(之前曾讲cmp写成全局函数,在main中类似调用,没碰到过问题),谁知编译竟报出: error: invalid use of non-static member function ‘bool MyClass::cmp(int, int)’ 看报错信息的字面意思似乎是:因为cmp是非static函数,那如果把cmp定义成...
include include <stdio.h> 大哥，程序没问题。就是输出格式错了， printf("the program consumes: \n%d",totaltime);改成 printf("the program consumes: \n%lf",totaltime);浮点数，你用十进制输出了。另外，要记得在程序开始，或者其它地方初始化start：start =clock();我调了半天。。。
🟠问题简述: 项目中使用std::thread把类的成员函数作为线程函数,在编译的时候报错了:"invalid use of non-static member function",于是研究了一番,于是就产生了这篇博文,记录一下。 错误示例 #include <iostream> #include <thread> #include <stdlib.h> using namespace s...
因此,编译器无法确定应该访问哪个实例的非静态成员,这会导致编译错误,即“invalid use of member in static member function”。 给出解决“invalid use of member in static member function”错误的方法 要解决这个问题,有几种方法: 将非静态成员改为静态成员:如果逻辑上允许,并且不依赖于类的任何特定实例,可以...
class Date { public: int day,month,year; void init(int,int,int); void print_ymd(); }; void Date::init(int yy, int mm, int dd) { year = yy; month = mm; day = dd; } void Date::print_ymd() { std::cout << year << "-" << month << "-" << day << std::endl; ...
src/mqqt.cpp: In member function 'int AWS_MQQT::aws_mqqt_setup(...)': src/mqqt.cpp:37:51: error: invalid use of non-static member function while (subscribe(topic_name, mySubCallBackHandler) != 0) { ^ I removed parameters from functions to simplify the code: ...
MicRecorder.cpp:297:79: error: invalid use of non-static member function。 1 2 如果要创建线程函数audioThread为MicRecorderImpl类成员函数,就需要使用静态函数。 但是,使用静态函数有两个问题: 1.静态函数不能访问非静态成员; 2.无法实现多实例;
vclPCG.C: In member function ‘virtual Foam::solverPerformance Foam::vclPCG::solve(Foam::scalarField&, const scalarField&, Foam::direction) const’: vclPCG.C:173:33: error: invalid use of non-static member function ldu2vcl(matrix, ublas_matrix); ...
(&Test::foo,this));//GCC 12.2 OK, Clang 16.0 :15:58: error: invalid use of 'this' outside of a non-static member functionF f;~defer_t() {f(); } }defer = {std::bind(&Test::foo,this)}; } };intmain() { std::cout <<"Hello world\n"; Test test; test.bar(); } Q:...
this 指针只能在类里面用.你在main 函数里面用当然会报错啦...!