could not deduce template argume…_could not deduce template-优快云博客

本文介绍了一种在使用C++进行字符串比较时遇到的典型编译错误，并详细解释了错误产生的原因及如何通过正确引入标准库来解决该问题。

出现以下错误的原因是未添加头文件：#include <string>

1>d:\microsoft visual studio 9.0\vc\include\functional(132) : error C2784: 'bool std::operator >(const std::vector<_Ty,_Alloc> &,const std::vector<_Ty,_Alloc> &)' : could not deduce template argument for 'const std::vector<_Ty,_Alloc> &' from 'const std::string'

1> d:\microsoft visual studio 9.0\vc\include\vector(1329) : see declaration of 'std::operator >'

1> d:\microsoft visual studio 9.0\vc\include\functional(131) : while compiling class template member function 'bool std::greater<_Ty>::operator ()(const _Ty &,const _Ty &) const'

1> with

1> [

1> _Ty=std::string

1> ]

1> f:\算法导论\程序代码\heapsort\heapsort\main.cpp(21) : see reference to class template instantiation 'std::greater<_Ty>' being compiled

1> with

1> [

1> _Ty=std::string

1> ]

1> d:\microsoft visual studio 9.0\vc\include\vector(1329) : see declaration of 'std::operator >'

1>d:\microsoft visual studio 9.0\vc\include\functional(132) : error C2784: 'bool std::operator >(const std::reverse_iterator<_RanIt> &,const std::reverse_iterator<_RanIt2> &)' : could not deduce template argument for 'const std::reverse_iterator<_RanIt> &' from 'const std::string'

1> d:\microsoft visual studio 9.0\vc\include\xutility(2244) : see declaration of 'std::operator >'

1>d:\microsoft visual studio 9.0\vc\include\functional(132) : error C2784: 'bool std::operator >(const std::_Revranit<_RanIt,_Base> &,const std::_Revranit<_RanIt2,_Base2> &)' : could not deduce template argument for 'const std::_Revranit<_RanIt,_Base> &' from 'const std::string'

1> d:\microsoft visual studio 9.0\vc\include\xutility(2057) : see declaration of 'std::operator >'

1>d:\microsoft visual studio 9.0\vc\include\functional(132) : error C2784: 'bool std::operator >(const std::pair<_Ty1,_Ty2> &,const std::pair<_Ty1,_Ty2> &)' : could not deduce template argument for 'const std::pair<_Ty1,_Ty2> &' from 'const std::string'

1> d:\microsoft visual studio 9.0\vc\include\utility(93) : see declaration of 'std::operator >'

1>d:\microsoft visual studio 9.0\vc\include\functional(132) : error C2676: binary '>' : 'const std::string' does not define this operator or a conversion to a type acceptable to the predefined operator