例如编译器会提醒你"xxx" has already been declared in the xxx file或类似的讯息,就是发生重複编译 这就是标头守卫(header guards)该挺身而出的时候,它的目的就是防止标头档内容被重複编译,例如各种类型的数据、结构体数据、静态变数等等 回到原先的程式范例,我们来改写它: /*test1.h*/ #ifndef __TEST1_H...
error: #101: error: #101: has already been declared in the current scope 将 #ifndef __STM32F10x_LIB_H #define __STM32F10x_LIB_H #endif调整到最后! file:///C:UsersADMINI~1AppDataLocalTempksohtmlwps_clip_image-20349.png error: #247: function "DelayUs" has already been defined 有一...
void MakeTree(){CreateBiTree(root);};你在类里面已经这个函数做定义了,外面这段就重复了。template<class T> void BiTree<T>::MakeTree(){ CreateBiTree(root);}
error: #101: has already been declared in the current scope 将 #ifndef __STM32F10x_LIB_H #define __STM32F10x_LIB_H #endif调整到最后! error: 有一个同名的DelayUs类已经被定义过了 error: #109: expression must have (pointer-to-) function type 这个问题就是那19个error中的大部分,...
{standard input}:1292: Error: symbol `.annobin_testCCompiler.c.exit' is already defined {standard input}:1931: Error: symbol `.annobin_testCCompiler.c_end' is already defined gmake[1]: *** [CMakeFiles/cmTC_05c22.dir/build.make:78: CMakeFiles/cmTC_05c22.dir/testCCompiler.c.o] ...
// int i; for (int i = 0; i < 1; i++); i = 20; // i has already gone out of scope under /Za } /Zg compiler option The /Zg compiler option (Generate Function Prototypes) is no longer available. This compiler option was previously deprecated. You can no longer run unit tes...
error LNK2005: _main already defined in Cpp1.obj 中文对照:(链接错误)main函数已经在Cpp1.obj文件中定义 分析:未关闭上一程序的工作空间,导致出现多个main函数 warning C4003: not enough actual parameters for macro 'xxx' 中文对照:(编译警告)宏xxx没有足够的实参 ...
First, as already noted, you've definedsepiaRed,sepiaGreen, andsepiaBluein the local scope of a block that is inaccessible when you try to access it outside that block. All of your range-checking is non-functional. Look at this condition: ...
certain cell types under poorly defined circumstances. Corresponding answers: First of all, we would like to thank you for summarizing the subversive understanding of vitamin C that our findings may bring, although it ha...
The first time you resume a co, it starts running the function pointing by co->fp. If co has already been yielded, aco_resume restarts it and continues the execution.After the call of aco_resume, we name the state of the caller — main co as "yielded"....