Keil, a smart comliler

Keil is a god compiler.

For example:

1> the compiler prompts "expression with possibly no effect", indicating that your current language is useless, as shown in figure

The following statement is used in Preprocessing:

# Define s2tb8 (A) (s2con & 0xf7) | (a) <3)

The solution is as follows:

# Define s2tb8 (a) s2con = (s2con & 0xf7) | (a) <3)

Then, the compilation is successful.

OMG. If Keil doesn't remind me, I don't know whether to save the calculated value. The name of Keil, the German chariot, is not false.

 

2> the compiler displays "error c187: Not an lvalue ",

The following statements are found in Preprocessing:

# Define F (a) ++)

The sub-function has the following statements:

Int A = F (1 );

The solution is as follows:

# Define F (a) + 1)

Then, the compilation passes smoothly.

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