build/core/config.mk 文件 # This is included by the top-level Makefile. # It sets up standard variables based on the # current configuration and platform, which # are not specific to what is being bui
c++中参数的形参列表中的形参是可以有默认值的。默认值必须是从右向左依次赋默认值。函数在主函数下面定义需要声明,声明时给默认值,实现时不需要给了。 //void fun(int a = 1, int b = 2, int c = 3)//{// cout << a << b << c << endl;;//}//函数在主函数下面定义需要声明 声明时给默认值,实现时不需要给