C++ 为什么我会收到此错误:在 '&' 标记之前预期为 ')'?

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时间:2020-08-27 18:42:24  来源:igfitidea点击:

Why am I getting this error: expected ')' before '&' token?

c++compiler-errors

提问by woodenToaster

I assume it has something to do with the #includes, but this is my first time trying to use them so I'm a little lost. I just wondered if anyone could tell immediately if there was an obvious mistake.

我认为它与#includes 有关,但这是我第一次尝试使用它们,所以我有点迷茫。我只是想知道是否有人可以立即判断是否有明显的错误。

 /** @file Translator.cpp */

#include <fstream>
#include "Translator.h"
#include <vector>

Translator(std::ifstream& fin)  //error appears on this line
{
    T1(fin);
    T1.createTable(fin);
    T2(fin);
    T2.createTable(fin));
    string temp;
    while(!fin.eof())
    {
    fin >> temp;
    message.push_back(temp);
    }
}

Thanks for your time.

谢谢你的时间。

回答by dasblinkenlight

It is hard to answer this question exactly without seeing the header, but if this is a function, you need to add a return type of voidto the definition of your function:

如果不看标题,很难准确回答这个问题,但如果这是一个函数,则需要void在函数定义中添加一个返回类型:

void Translator(std::ifstream& fin) {
    ...
}

If this is a constructor, you need to provide its qualified name:

如果这是一个构造函数,则需要提供其限定名称:

Translator::Translator(std::ifstream& fin) {
    ...
}

回答by Yuushi

Without the declaration of Translatorit's a bit hard to say, but if it's meant to be a constructor, then it should be Translator::Translator(std::ifstream& fin). If it's meant to be a method, then it should have a return type specified, so something like void Translator(std::ifstream& fin).

没有Translator它的声明有点难说,但如果它是一个构造函数,那么它应该是Translator::Translator(std::ifstream& fin). 如果它是一个方法,那么它应该指定一个返回类型,比如void Translator(std::ifstream& fin).