vv1133 questions

• Double parentheses of a function call？
• Why does this (i = ++i % 3) generate a warning: "may be undefined"? [duplicate]
• why is cygwin so slow
• How do I get the explanation of gcc -s?
• why does python logging level in basicConfig have no effect?
• What's the difference between the macros "#define STR(x) #x" and "#define STR(x) VAL(x)" with "#define VAL(x) #x"?

vv1133 answers