定义结构(例二:堆栈) typedef struct CStackTag int size //Size of each space Int quantity; Number of stack spaces int bottom: / Bottom of stack Int top //top of stack 3 STack定义结构（例二：堆栈） typedef struct CStackTag { int size; //Size of each space int quantity; //Number of stack spaces int bottom;// Bottom of stack int top; // top of stack } CStack;