C++程序设计--宏定义使用--返回值

//macro.cpp 

#include <iostream> 
using namespace std; 
 
#define getAvgTime(x) ({       \ 
    x+10; \          //千万不要写成return x+10;g++编译器会报错 
}) 
 
int main() { 
    int x = 10, y=0; 
    y =getAvgTime(x); 
    cout <<"x = " << x <<", y = " << y <<endl; 
 
    return 0; 
}#include <iostream> 
using names