Question

我试着让这个程序运行但我无法弄清楚这个错误的错误。

我有这5个文件，我在candidateType.cpp

中得到错误

candidatetype.h

#ifndef H_candidateType
#define H_candidateType

#include <string>
#include <iostream>
#include "personType.h"

const int NO_OF_REGIONS = 4;

class candidateType: public personType
{
public:
      const candidateType& operator=(const candidateType&);

      const candidateType& operator=(const personType&);

      void updateVotesByRegion(int region, int votes);

      void setVotes(int region, int votes);

      void calculateTotalVotes();

      int getTotalVotes() const;

      void printData() const;

      candidateType();

       bool operator==(const candidateType& right) const;
       bool operator!=(const candidateType& right) const;
       bool operator<=(const candidateType& right) const;
       bool operator<(const candidateType& right) const;
       bool operator>=(const candidateType& right) const;
       bool operator>(const candidateType& right) const;

private:
        int votesByRegion[NO_OF_REGIONS];

        int totalVotes;
};
#endif

candidatetype.cpp

#include "candidateType.h"

void candidateType::setVotes(int region, int votes)
{
    votesByRegion[region - 1] = votes;
}

void candidateType::updateVotesByRegion(int region, int votes)
{
    votesByRegion[region - 1] = votesByRegion[region - 1] + votes;
}

void candidateType::calculateTotalVotes()
{
    int i;

    totalVotes = 0;

    for (i = 0; i < NO_OF_REGIONS; i++)
        totalVotes += votesByRegion[i];
}

int candidateType::getTotalVotes() const
{
    return totalVotes;
}

void candidateType::printData() const
{
    cout << left
        << setw(8) << firstName << " "
        << setw(8) << lastName << " ";

    cout << right;
    for (int i = 0; i < NO_OF_REGIONS; i++)
        cout << setw(8) << votesByRegion[i] << " ";
        cout << setw(7) << totalVotes << endl;
}

candidateType::candidateType()
{
    for (int i = 0; i < NO_OF_REGIONS; i++)
        votesByRegion[i] = 0;

    totalVotes = 0;
}

bool candidateType::operator==(const candidateType& right) const
{
    return (firstName == right.firstName && lastName == right.lastName);
}

bool candidateType::operator!=(const candidateType& right) const
{
    return (firstName != right.firstName || lastName != right.lastName);
}

bool candidateType::operator<=(const candidateType& right) const
{
    return (lastName <= right.lastName || (lastName == right.lastName
             && firstName <= right.firstName));
}

bool candidateType::operator<(const candidateType& right) const
{
    return (lastName < right.lastName || (lastName == right.lastName
             && firstName < right.firstName));
}

bool candidateType::operator>=(const candidateType& right) const
{
    return (lastName >= right.lastName || (lastName == right.lastName
             && firstName >= right.firstName));
}

bool candidateType::operator>(const candidateType& right) const
{
    return (lastName > right.lastName || (lastName == right.lastName
             && firstName > right.firstName));
}

const candidateType& candidateType::operator=(const candidateType& right)
{
    if (this != &right)
    {
        firstName = right.firstName;
        lastName = right.lastName;

        for (int i = 0; i < NO_OF_REGIONS; i++)
            votesByRegion[i] = right.votesByRegion[i];

        totalVotes = right.totalVotes;
      }

    return *this;
}

const candidateType& candidateType::operator=(const personType& right)
{
    firstName = right.getFirstName();
    lastName = right.getLastName();

    return *this;
}

成员函数中的

void candidateType :: printData（）const | 31 |错误：未在此范围中声明'setw' || ===构建失败：1个错误，0个警告（0分钟，0秒（秒））=== |

Answer 1

您需要包含标题<iomanip>并使用嵌套名称std::setw

Answer 2

 'setw' was not declared

表示您缺少setw声明。它在名称空间std中定义，并在<iomanip>标题中显示。所以只需要包含这个并用

包装setw的用法

std::setw

排序alg错误与调用不匹配

2 个答案: