‘close’ was not declared in this scope（转）

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was not declared in this scope

“was not declared in this scope”是一个错误信息,在编译的时候会遇到.其含义为标识符在其出现的地方是未被定义的. 出现该错误的时候,会同时把未定义的变量名显示出来.比如如下程序: int main(){ printf("%d",i);//这个i是没定义的.} 就会显示一个'i' was not declared in this scope或者类似的错误信息出来. 对于变量和函数,如果未定义都会出现这个错误. 该错误出现时,需要根据出现该错误的行号及名…

error: 'LOGE' was not declared in this scope

移植了下HAL,发现编译出现如下错误 error: 'LOGE' was not declared in this scope 比较了一下android4.1的 system/core/include/cutils/log.h和android4.0的对应文件, 发现在4.1当中已经将所有的LOG宏前面加了一个字母A .所以出现上述编译错误. 修改HAL层源码:将LOGE LOGD等等全部加个A 方法: `grep LOG -rl .` 附上一个linux中的字符串查找替换用法: Lin…

c++ - fcgio.cpp:50: error: 'EOF' was not declared in this scope - Stack Overflow

c++ - fcgio.cpp:50: error: 'EOF' was not declared in this scope - Stack Overflow fcgio.cpp:50: error: 'EOF' was not declared in this scope…

【QT】error: 'SIGNAL' was not declared in this scope

error: 'SIGNAL' was not declared in this scope 未在此范围内声明. connect(ui->Btnshowhello,SIGNAL(clicked(bool),this,SLOT(BtnshowhelloSlot())); 其他错误导致的此报错.. 是SIGNAL后括号忘了.…

【error】'isnan' was not declared in this scope

error问题 'isnan' was not declared in this scope isnan在cmath中被取消宏定义: // These are possible macros imported from C99-land. #undef fpclassify #undef isfinite #undef isinf #undef isnan 使用的时候可以在isnan前加上std命名空间即可:…

[Error] 'exit' was not declared in this scope的解决方法

新手刚开始用Linux和c++写程序,可能会出现下面的错误 error: ‘exit’ was not declared in this scope 解决方法是添加 #include <cstdlib> …

解决Cygwin编译cocos2dx 遇到的 error: 'UINT64_C' was not declared in this scope 问题

环境工具:Win10.VS2013.cocos2d-x-2.2.6.Cygwin.ADT 问题来源:写了一个小游戏,VS2013上运行成功,就尝试着打包apk,项目导入到ADT里面,添加了cocos2dx lib库以后,讨厌的红x消失,下来就是在cygwin里面预编译得到xxx.so文件了,但是问题来了,报错!!! jni/../../Classes/GameLayer.cpp:227:46: error: 'UINT64_C' was not declared in this scope 怎么…