Operator '?:' has lower precedence than '*'; '*' will be evaluated first

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Operator '?:' has lower precedence than ''; '' will be evaluated first

1.项目中用宏的时候,遇到如下警告 Operator '?:' has lower precedence than '*'; '*' will be evaluated first 2.错误原因 *操作符的优先级比 ?符号优先级低,会先*运算,结果也许就并不是自己需要的类似此错误一般都与优先级有关 3.解决方案(示例) #define app_rate (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)? screen_width/76…

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iOS -- warnings

Semantic Warnings Warning Message -WCFString-literal input conversion stopped due to an input byte that does not belong to the input codeset UTF-8 -WNSObject-attribute __attribute ((NSObject)) may be put on a typedef only, attribute is ignore…

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Semantic Warnings Warning Message -WCFString-literal input conversion stopped due to an input byte that does not belong to the input codeset UTF-8 -WNSObject-attribute __attribute ((NSObject)) may be put on a typedef only, attribute is ignored -Wabst…