C++ - std::set not declared
C++ - std::set not declared
#include <iostream>
using std::set;
using std::cout;
using std::endl;
错误报告:
Josephus_Permutation.cpp:3:13: error: ‘std::set’ has not been declared
std::set
不应该是命名空间std
的STL吗?
它位于std
名称空间中,但您需要包含适当的标题:
#include <set>
<iostream>
头文件只包含标准输入/输出库,其中包括std::cout
和std::endl
。而std::set
在<set>
中定义。
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