STL相关问题

写set容器遇到以下问题: C:\Users\admin\Desktop\未命名2.cpp In function 'int main()': 67 98 C:\Users\admin\Desktop\未命名2.cpp [Error] 'set_union' was not declared in this scope 72 1 C:\Users\admin\Desktop\未命名2.cpp [Error] 'set_intersection' is not a member of 'std' 78 103 C:\Users\admin\Desktop\未命名2.cpp [Error] 'set_difference' was not declared in this scope 84 116 C:\Users\admin\Desktop\未命名2.cpp [Error] 'set_symmetric_difference' was not declared in this scope 全TM #include 的锅，有些人用的VS可能不会出错，Dev就会出错，Algorithm解决STL问题