keil工程代码,浮点计算中引用了数学库 math.h 中的round函数,但编译时出现告警 “warning: #223-D: function "round" declared implicitly”。 解决办法,打开配置工具,在C/C++栏下构选 C99 mode,重新编译,该告警解除。
warning: #223-D:function"assert_param"declaredimplicitly#define USE _ STDPERIPH _ DRIVER " 是否使用外围设备抯应用程序代码中的驱动程序添加USE _ STDPERIPH _ DRIVER,解决。 warning: #223-D: function “XXXXXX“ declared implicitly 错误:warning: #223-D:function“XXXXXX(某函数名)”declaredimplicitly问题...
$ go build # cgotest In file included from _cgo_export.c:4: main.go:7:2: error: call to undeclared function '_GoStringLen'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] main.go:8:2: error: call to undeclared function '_GoStringPtr...