1. Compile with keil5 warning: #1-D: last line of file ends without a newline The last line return does not work
After the last line is entered, make sure it is in the first column. The new line cannot have spaces or other empty characters to avoid this warning.
2. When defining a header file, a message similar to X #include "led.h" always appears on the interface, but no errors or warnings appear in the compilation.
Open keil5's option for target --> c/c++ --> Include Paths, do not do anything, just click OK, and then exit
3. When using MDK debugging, the following error occurs:
error: #268: declaration may not appear after executablestatement
After querying, I found the problem:
The declaration of variables cannot be placed after the executable statement. The variables must be declared at the beginning of the main function!
The above error will occur when declaring a variable in a program.
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