2
我在編譯VC++ 2010下面的代碼是一個家庭作業：32錯誤的東西，不應該發生
#include <iostream>
#include <map>
#include "PaintJobEst.h"
using namespace std;
int main(void)
{
map< string, double > data;
double numRooms = 0, costPerGallon = 0, sqrFtWallSpace = 0;
cout << "How many rooms wil you be painting today? " << endl;
cin >> numRooms;
const bool numRoomsAtLeastOne = (numRooms >= 1);
if (!numRoomsAtLeastOne)
{
cout << "INVALID ENTRY: Please enter a value greater than or equal to 1 for the amount of rooms you wish to paint" << endl;
main();
}
cout << "What is the cost of paint per gallon? " << endl;
cin >> costPerGallon;
const bool costCheck = (costPerGallon >= 10.00);
if (!costCheck)
{
cout << "INVALID ENTRY: Please enter a value greater than or equal to 10.00 for the cost-per-gallon of paint you wish to use." << endl;
main();
}
cout << "What is the square feet of wallspace per gallon of paint you wish to cover? " << endl;
cin >> sqrFtWallSpace;
const bool sqrFeetCheck = (sqrFtWallSpace >= 0);
if (!sqrFeetCheck)
{
cout << "INVALID ENTRY: Please enter a value which is NON-NEGATIVE for covering the square feet of wallspace per gallon" << endl;
main();
}
data.insert(pair< string, double >("numRooms", numRooms));
data.insert(pair< string, double >("costPerGallon", costPerGallon));
data.insert(pair< string, double >("sqrFtWallSpace", sqrFtWallSpace));
Estimate(data);
system("pause");
}
然而，當我編譯它，不然我和奇怪的錯誤淹沒這是有關如何xfunctional文件。爲什麼發生這種情況，我不知道。我是否在某處丟失了包含文件？
錯誤
>------ Build started: Project: Project17, Configuration: Debug Win32 ------
1> main.cpp
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce template argument for 'const std::_Tree<_Traits> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(1885) : see declaration of 'std::operator <'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(124) : while compiling class template member function 'bool std::less<_Ty>::operator()(const _Ty &,const _Ty &) const'
1> with
1> [
1> _Ty=std::string
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\map(71) : see reference to class template instantiation 'std::less<_Ty>' being compiled
1> with
1> [
1> _Ty=std::string
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(451) : see reference to class template instantiation 'std::_Tmap_traits<_Kty,_Ty,_Pr,_Alloc,_Mfl>' being compiled
1> with
1> [
1> _Kty=std::string,
1> _Ty=double,
1> _Pr=std::less<std::string>,
1> _Alloc=std::allocator<std::pair<const std::string,double>>,
1> _Mfl=false
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(520) : see reference to class template instantiation 'std::_Tree_nod<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(659) : see reference to class template instantiation 'std::_Tree_val<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\map(81) : see reference to class template instantiation 'std::_Tree<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\users\holland\documents\code\projects\studying\chapter6\project17\project17\main.cpp(13) : see reference to class template instantiation 'std::map<_Kty,_Ty>' being compiled
1> with
1> [
1> _Kty=std::string,
1> _Ty=double
1> ]
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce template argument for 'const std::_Tree<_Traits> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(1885) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce template argument for 'const std::_Tree<_Traits> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(1885) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::unique_ptr<_Ty,_Dx> &,const std::unique_ptr<_Ty2,_Dx2> &)' : could not deduce template argument for 'const std::unique_ptr<_Ty,_Dx> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\memory(2582) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::unique_ptr<_Ty,_Dx> &,const std::unique_ptr<_Ty2,_Dx2> &)' : could not deduce template argument for 'const std::unique_ptr<_Ty,_Dx> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\memory(2582) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::unique_ptr<_Ty,_Dx> &,const std::unique_ptr<_Ty2,_Dx2> &)' : could not deduce template argument for 'const std::unique_ptr<_Ty,_Dx> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\memory(2582) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1356) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1356) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1356) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1179) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1179) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xutility(1179) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\utility(318) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\utility(318) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): 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> c:\program files (x86)\microsoft visual studio 10.0\vc\include\utility(318) : see declaration of 'std::operator <'
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2676: binary '<' : 'const std::string' does not define this operator or a conversion to a type acceptable to the predefined operator
1> PaintJobEst.cpp
1>c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(125): error C2784: 'bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce template argument for 'const std::_Tree<_Traits> &' from 'const std::string'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(1885) : see declaration of 'std::operator <'
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional(124) : while compiling class template member function 'bool std::less<_Ty>::operator()(const _Ty &,const _Ty &) const'
1> with
1> [
1> _Ty=std::string
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\map(71) : see reference to class template instantiation 'std::less<_Ty>' being compiled
1> with
1> [
1> _Ty=std::string
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(451) : see reference to class template instantiation 'std::_Tmap_traits<_Kty,_Ty,_Pr,_Alloc,_Mfl>' being compiled
1> with
1> [
1> _Kty=std::string,
1> _Ty=double,
1> _Pr=std::less<std::string>,
1> _Alloc=std::allocator<std::pair<const std::string,double>>,
1> _Mfl=false
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(520) : see reference to class template instantiation 'std::_Tree_nod<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\xtree(659) : see reference to class template instantiation 'std::_Tree_val<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\program files (x86)\microsoft visual studio 10.0\vc\include\map(81) : see reference to class template instantiation 'std::_Tree<_Traits>' being compiled
1> with
1> [
1> _Traits=std::_Tmap_traits<std::string,double,std::less<std::string>,std::allocator<std::pair<const std::string,double>>,false>
1> ]
1> c:\users\holland\documents\code\projects\studying\chapter6\project17\project17\paintjobest.cpp(9) : see reference to class template instantiation 'std::map<_Kty,_Ty>' being compiled
1> with
1> [
1> _Kty=std::string,
1> _Ty=double
1> ]
添加頭如下描述：http://stackoverflow.com/questions/4939204/使用-AN-stdstring作爲一種密鑰換一個-stdmap –
Maggie
2012-02-05 04:04:51