Question

(VC++) 如何定义字符串 char* 数组？

/***************
编译器: Default compiler
执行 g++.exe...
g++.exe "F:\Temp\编程练习_05.04_用循环显示数据.cpp" -o "F:\Temp\编程练习_05.04_用循环显示数据.exe" -I"D:\Program Files (x86)\DEV-CPP\lib\gcc\mingw32\3.4.2\include" -I"D:\Program Files (x86)\DEV-CPP\include\c++\3.4.2\backward" -I"D:\Program Files (x86)\DEV-CPP\include\c++\3.4.2\mingw32" -I"D:\Program Files (x86)\DEV-CPP\include\c++\3.4.2" -I"D:\Program Files (x86)\DEV-CPP\include" -L"D:\Program Files (x86)\DEV-CPP\Lib"
F:\Temp\编程练习_05.04_用循环显示数据.cpp: In function `int main()':
F:\Temp\编程练习_05.04_用循环显示数据.cpp:15: error: expected primary-expression before "char"
F:\Temp\编程练习_05.04_用循环显示数据.cpp:15: error: expected `;' before "char"

F:\Temp\编程练习_05.04_用循环显示数据.cpp:30: error: expected unqualified-id before "int"
F:\Temp\编程练习_05.04_用循环显示数据.cpp:30: error: expected `,' or `;' before "int"
F:\Temp\编程练习_05.04_用循环显示数据.cpp:32: error: expected primary-expression before "char"
F:\Temp\编程练习_05.04_用循环显示数据.cpp:32: error: expected `;' before "char"
F:\Temp\编程练习_05.04_用循环显示数据.cpp:35: error: `sum' undeclared (first use this function)
F:\Temp\编程练习_05.04_用循环显示数据.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)

执行结束
*************************************************************************************************/

// 编程练习_05.04_用循环显示数据.cpp
/****************************** 第4题 **************************************
4.假设要销售 C++ For Fools 一书。请编写一个程序，输入全年中每个月的销售量
（图书数量，而不是销售额）。程序通过循环，使用初始化为月份字符串的char* 数组
（或string对象数组）逐月进行提示，并将输入的数据储存在一个int数组中。
然后，程序计算数组中各元素的总数，并报告这一年的销售情况。
*****************************************************************************/
#include <iostream>
#include <string>
int main()
{
using namespace std;
const int monnum = 12;
int sale [monnum];
string char[monnum]* =
{
"Please enter the distribution records of January: ",
"Please enter the distribution records of February: ",
"Please enter the distribution records of March: ",
"Please enter the distribution records of April: ",
"Please enter the distribution records of May: ",
"Please enter the distribution records of June: ",
"Please enter the distribution records of July: ",
"Please enter the distribution records of August: ",
"Please enter the distribution records of September: ",
"Please enter the distribution records of October: ",
"Please enter the distribution records of November: ",
"Please enter the distribution records of December: "
};
for (int i = 0, int sum = 0; i < 12; ++i)
{
cout << char[i]*;
cin >> sale[i];
cout << endl;
sum += sale[i];
}

while (2);
return 0;
}

Answer 1

你的程序有些错误如string char[monnum]* = 不能用char 当变量名，因为它是C++中的关键字，也许你是想用char定义数组吧，但是char 是不能和string连用的，你学C++的话最好用string定义数组吧，还有 while (2); 也是不用写的，如果你加 while (2); 程序就不能终止了，也就是不会执行return 0;语句了。还有你不要在for()语句里定义sum = 0,不然你在for()循环完了，再输出sum 就错了，因为sum是在for()语句中定义的，只能在for()中使用不能在for()外面输出，我给改了程序如下，你看看怎么样：
#include <iostream>
#include <string>

using namespace std;

int main()
{
const int monnum = 12;
int sale [monnum];
int sum = 0;
// string smonth[]是用C++中的string 定义的字符串数组
//如果你想用C语言中的指针(呵呵，同样也是C++中的，只是在C++中少用了，大多都用string代替了)，你就把 string smonth[]= 用 char *scmonth[]= 代替
string smonth[] =
// char *scmonth[] =
{
"Please enter the distribution records of January: ",
"Please enter the distribution records of February: ",
"Please enter the distribution records of March: ",
"Please enter the distribution records of April: ",
"Please enter the distribution records of May: ",
"Please enter the distribution records of June: ",
"Please enter the distribution records of July: ",
"Please enter the distribution records of August: ",
"Please enter the distribution records of September: ",
"Please enter the distribution records of October: ",
"Please enter the distribution records of November: ",
"Please enter the distribution records of December: "
};
for (int i = 0; i != 12; ++i)
{
cout << smonth[i]; // 你用char *scmonth[] 就把 cout << smonth[i];用cout << scmonth[i];代替
// cout << scmonth[i];
cin >> sale[i];
cout << endl;
sum += sale[i];
}
cout <<"a year sum is " << sum << endl; //输出sum
return 0;
}

Answer 2

//定义一个字符指针数组，相当于字符串数组
char * pchArray[monnum]; // pch 代码 point char 表示类型 ，

或者使用string类对象
string strOut[monnum]; 这样就oK了，这个就不需要指针了

Answer 3

#include <iostream>
#include <string>
int main()
{
using namespace std;
const int monnum = 12;
int sale [monnum];
string cha[monnum] =
{
"Please enter the distribution records of January: ",
"Please enter the distribution records of February: ",
"Please enter the distribution records of March: ",
"Please enter the distribution records of April: ",
"Please enter the distribution records of May: ",
"Please enter the distribution records of June: ",
"Please enter the distribution records of July: ",
"Please enter the distribution records of August: ",
"Please enter the distribution records of September: ",
"Please enter the distribution records of October: ",
"Please enter the distribution records of November: ",
"Please enter the distribution records of December: "
};
for (int i = 0, sum = 0; i < 12; ++i)
{
cout << cha[i];
cin >> sale[i];
cout << endl;
sum += sale[i];
}

return 0;
}

Answer 4

string char[monnum]* =
char是个关键字,不能用作变量名称

Answer 5

kankan...