Main.cc:1:1: error: stray ‘\350’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:2: error: stray ‘\223’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:3: error: stray ‘\235’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:4: error: stray ‘\346’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:5: error: stray ‘\241’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:6: error: stray ‘\245’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:7: error: stray ‘\346’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:8: error: stray ‘\235’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:9: error: stray ‘\257’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:13: error: stray ‘\351’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:14: error: stray ‘\242’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:15: error: stray ‘\230’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:16: error: stray ‘\347’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:17: error: stray ‘\233’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:18: error: stray ‘\256’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:19: error: stray ‘\343’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:20: error: stray ‘\200’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:21: error: stray ‘\212’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:22: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:23: error: stray ‘\271’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:24: error: stray ‘\263’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:25: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:26: error: stray ‘\271’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:27: error: stray ‘\264’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:28: error: stray ‘\351’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:29: error: stray ‘\227’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:30: error: stray ‘\260’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:31: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:32: error: stray ‘\271’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:33: error: stray ‘\264’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:34: error: stray ‘\347’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:35: error: stray ‘\256’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:36: error: stray ‘\227’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:37: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:38: error: stray ‘\244’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:39: error: stray ‘\251’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:40: error: stray ‘\346’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:41: error: stray ‘\225’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:42: error: stray ‘\260’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:43: error: stray ‘\343’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:44: error: stray ‘\200’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:45: error: stray ‘\213’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:46: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:47: error: stray ‘\210’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:48: error: stray ‘\233’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:49: error: stray ‘\346’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:50: error: stray ‘\260’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:51: error: stray ‘\252’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:52: error: stray ‘\347’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:53: error: stray ‘\274’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:54: error: stray ‘\226’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:55: error: stray ‘\347’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:56: error: stray ‘\250’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:57: error: stray ‘\213’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:58: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:59: error: stray ‘\217’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:60: error: stray ‘\202’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:61: error: stray ‘\350’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:62: error: stray ‘\200’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:63: error: stray ‘\203’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:64: error: stray ‘\347’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:65: error: stray ‘\250’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:66: error: stray ‘\213’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:67: error: stray ‘\345’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:68: error: stray ‘\272’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:69: error: stray ‘\217’ in program 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ Main.cc:1:10: error: ‘C’ does not name a type 蓝桥杯C++题目《平年闰年算天数》创氪编程参考程序 ^ In file included from /usr/include/c++/7/cmath:43:0, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/include/c++/7/ext/type_traits.h:162:35: error: ‘bool __gnu_cxx::__is_null_pointer’ redeclared as different kind of symbol __is_null_pointer(std::nullptr_t) ^ /usr/include/c++/7/ext/type_traits.h:157:5: note: previous declaration ‘template bool __gnu_cxx::__is_null_pointer(_Type)’ __is_null_pointer(_Type) ^~~~~~~~~~~~~~~~~ /usr/include/c++/7/ext/type_traits.h:162:26: error: ‘nullptr_t’ is not a member of ‘std’ __is_null_pointer(std::nullptr_t) ^~~~~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:120:31: error: declaration of ‘operator new’ as non-function void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^ /usr/include/c++/7/new:120:25: error: ‘size_t’ is not a member of ‘std’ void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^~~~~~ /usr/include/c++/7/new:120:25: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:122:33: error: declaration of ‘operator new []’ as non-function void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^ /usr/include/c++/7/new:122:27: error: ‘size_t’ is not a member of ‘std’ void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^~~~~~ /usr/include/c++/7/new:122:27: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:134:25: error: declaration of ‘operator new’ as non-function void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:134:25: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:134:25: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:134:33: error: expected primary-expression before ‘const’ void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~ /usr/include/c++/7/new:136:27: error: declaration of ‘operator new []’ as non-function void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:136:27: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:136:27: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:136:35: error: expected primary-expression before ‘const’ void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~ /usr/include/c++/7/new:168:32: error: declaration of ‘operator new’ as non-function inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:168:32: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:168:32: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:168:40: error: expected primary-expression before ‘void’ inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~ /usr/include/c++/7/new:170:34: error: declaration of ‘operator new []’ as non-function inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:170:34: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:170:34: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/new:170:42: error: expected primary-expression before ‘void’ inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:362:31: error: ‘std::size_t’ has not been declared template ^~~~~~ /usr/include/c++/7/type_traits:363:25: error: ‘_Size’ was not declared in this scope struct is_array<_Tp[_Size]> ^~~~~ /usr/include/c++/7/type_traits:363:31: error: template argument 1 is invalid struct is_array<_Tp[_Size]> ^ /usr/include/c++/7/type_traits:561:42: error: ‘nullptr_t’ is not a member of ‘std’ struct __is_null_pointer_helper ^~~~~~~~~ /usr/include/c++/7/type_traits:561:42: note: suggested alternative: In file included from /usr/include/c++/7/cstddef:50:0, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note: ‘nullptr_t’ typedef decltype(nullptr) nullptr_t; ^~~~~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:561:42: error: ‘nullptr_t’ is not a member of ‘std’ struct __is_null_pointer_helper ^~~~~~~~~ /usr/include/c++/7/type_traits:561:42: note: suggested alternative: In file included from /usr/include/c++/7/cstddef:50:0, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:45, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note: ‘nullptr_t’ typedef decltype(nullptr) nullptr_t; ^~~~~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:561:51: error: template argument 1 is invalid struct __is_null_pointer_helper ^ /usr/include/c++/7/type_traits:1464:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1464:37: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:1464:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1464:37: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:1464:61: error: template argument 1 is invalid : public integral_constant { }; ^ /usr/include/c++/7/type_traits:1464:61: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1469:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1469:37: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:1469:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1469:37: note: suggested alternative: In file included from /usr/include/stdlib.h:31:0, from /usr/include/c++/7/bits/std_abs.h:38, from /usr/include/c++/7/cmath:47, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:41, from Main.cc:2: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from /usr/include/c++/7/complex:45, from /usr/include/c++/7/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52, from Main.cc:2: /usr/include/c++/7/type_traits:1469:46: error: template argument 1 is invalid : public integral_constant { }; ^ /usr/include/c++/7/type_traits:1469:46: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1471:31: error: ‘std::size_t’ has not been declared template ^~~~~~ /usr/include/c++/7/type_traits:1472:21: error: ‘_Size’ was not declared in this scope struct rank<_Tp[_Size]> ^~~~~ /usr/include/c++/7/type_traits:1472:27: error: template argument 1 is invalid struct rank<_Tp[_Size]> ^ /usr/include/c++/7/type_traits:1473:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant::value> { }; ^~~~~~ /usr/include/c++/7/type_traits:1473:37: note: suggested alternative: