我正在为类(class)开发一个程序,它接受 0 到 9999 之间的数字,并吐出单词值(即 13 会被吐出为“十三”等),我很痛苦由于某种原因数组。
这是迄今为止的类(class):
#include<iostream>
#include<string>
using namespace std;
class Numbers
{
private:
int number;
string lessThan20[ ] = {"zero", "one", "two", "three", "four", "five",
"six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen",
"fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};
string incrementsOfTen[ ] = {"twenty", "thirty", "fourty", "fifty", "sixty",
"seventy", "eighty", "ninety"};
string hundred = "hundred";
string thousand = "thousand";
public:
Numbers(int newNumber)
{
setNumber(newNumber);
}
void setNumber(int newNumber)
{
if(newNumber < 0 || newNumber > 9999)
{
cout << "Number cannot be negative or larger than 9999, defaulted to zero." << endl;
number = 0;
}
else
{
number = newNumber;
}
}
int getNumber()
{
return number;
}
};
我的问题出在两个字符串数组上,我从编译器返回这些错误:
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(19) : error C2059: syntax error : '{'
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(19) : error C2334: unexpected token(s) preceding '{'; skipping apparent function body
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(22) : error C2059: syntax error : '{'
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(22) : error C2334: unexpected token(s) preceding '{'; skipping apparent function body
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(24) : error C2864: 'Numbers::hundred' : only static const integral data members can be initialized within a class
1>f:\college work\csis 297\assignment 4\chapter 11-1\chapter 11-1\11-1.cpp(25) : error C2864: 'Numbers::thousand' : only static const integral data members can be initialized within a class
我确信如果我在单变量字符串上花更多的时间我可以弄清楚这些,但是我花了一个小时的大部分时间来查找我在两个数组上做错了什么,任何建议或信息将不胜感激。
提前致谢。
PS:不,没有 main,还没有到达那里,我的程序现在有一个空白的 main,因为我只是想让类暂时编译无错误。
编辑澄清:
前两个错误发生在第一个数组上,后两个错误发生在第二个数组上,最后两个错误发生在非数组字符串上。
最佳答案
错误消息说明了一切:
only static const integral data members can be initialized within a class
你不能做你想做的事,你必须分开声明和初始化,并将初始化移动到构造函数,或者使用static const
,并将初始化放在类之外。这是首选方法,因为这些值实际上不会改变,或者取决于实例:
class Numbers
{
private:
static const string lessThan20[];
// …
};
string const Numbers::lessThan20[ ] = {"zero", "one", "two", "three", "four", "five",
"six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen",
"fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};
对于另一个数组也是类似的。
关于c++ - C++ 中的字符串数组无法正常工作?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2348363/