Cの旧関数宣言 - Qiita#define FLOAT_TYPE /* old declaration */ #if defined (FLOAT_TYPE) float #else int #endif add(); /* old definition */ #if defined (FLOAT_TYPE) float #else int #endif add(a, b) #if defined (FLOAT_TYPE) float a; float b; #else int a; int b; #endif { return a + b; }
