我有一個translator.h文件預計主要表達
class Dictionary
{
public:
Dictionary(const char dictFileName[]);
void translate(char out_s[], const char s[]);
下面的代碼,我調用該函數在我translator.cpp文件如下
for (int i=0; i<2000;i++)
{
Dictionary:: translate (out_s[],temp_eng_words[i]);
}
這給了我一個錯誤「在''標記'之前預期主要表達'」。我不明白什麼是錯誤的,並決定如果在上面的代碼片段中發現問題,則不要放置整個代碼。
任何想法??
我已經嘗試過,沒有out_s [],但它給了我一個錯誤「無法調用成員函數void dictionary :: translate(char *,const char *)without object」。我會發布整個代碼,以更清楚地表明問題可能是什麼。
Translator.cpp
#include <iostream>
#include <fstream>
#include <sstream>
#include <cstring>
#include "Translator.h"
using namespace std;
void Dictionary::translate(char out_s[], const char s[])
{
int i;
char englishWord[MAX_NUM_WORDS][MAX_WORD_LEN];
for (i=0;i < numEntries; i++)
{
if (strcmp(englishWord[i], s)==0)
break;
}
if (i<numEntries)
strcpy(out_s,elvishWord[i]);
}
char Translator::toElvish(const char elvish_line[],const char english_line[])
{
int j=0;
int k=0;
char temp_eng_words[2000][50];
char out_s;
//char temp_elv_words[2000][50]; NOT SURE IF I NEED THIS
std::string str = english_line;
std:: istringstream stm(str);
string word;
while(stm >> word) // read white-space delimited tokens one by one
{
strcpy (temp_eng_words[k],word.c_str());
k++;
}
for (int i=0; i<2000;i++)
{
Dictionary:: translate (out_s,temp_eng_words[i]); // ERROR RELATES TO THIS LINE - cannot call member function like this. error - expected primary expression
// before ] if written out_s[].
}
}
Translator::Translator(const char dictFileName[]) : dict(dictFileName)
{
char englishWord[2000][50];
char temp_eng_word[50];
char temp_elv_word[50];
char elvishWord[2000][50];
int num_entries;
fstream str;
str.open(dictFileName, ios::in);
int i;
while (!str.fail())
{
for (i=0; i< 2000; i++)
{
str>> temp_eng_word;
str>> temp_elv_word;
strcpy(englishWord[i],temp_eng_word);
strcpy(elvishWord[i],temp_elv_word);
}
num_entries = i;
}
str.close();
}
}
translator.h
const int MAX_NUM_WORDS=2000;
const int MAX_WORD_LEN=50;
class Dictionary
{
public:
Dictionary(const char dictFileName[]);
void translate(char out_s[], const char s[]); // s represents a wor out_s, the translated word
private:
char englishWord[MAX_NUM_WORDS][MAX_WORD_LEN];
char elvishWord[MAX_NUM_WORDS][MAX_WORD_LEN];
int numEntries;
};
class Translator
{
public:
Translator(const char s[]);
char toElvish(const char out_s[],const char s[]);
char toEnglish(char out_s[], const char s[]);
private:
Dictionary dict;
};
關於你提到的第二個錯誤:'translate'是Dictionary'的'非靜態成員。您必須將其稱爲「Dictionary」的實例。似乎在'Translator'類中有一個,所以你可能的意思是'dict.translate(out_s,temp_eng_words [i]);'' – Angew