内置数据类型的默认初始化 [英] default initialization for built in data types

问题描述

我研究了每种内置数据类型都支持一种特殊的构造函数语法，以将其对象初始化为零.

Hi,

I have studied that each built-in data type supports a special constructor syntax to initialize its object to zero.

For example:
// sets ival to 0, dval to 0.0
int ival = int();
double dval = double();
In the following definition,
// int() applied to each of the 10 elements
vector< int > ivec( 10 );

但是，当我在

But when I tried this on my

Microsoft Visual Studio 2008
Version 9.0.21022.8 RTM
Microsoft .NET Framework
Version 3.5
Installed Edition: Professional
Microsoft Visual C++ 2008

编译器，我得到一个链接器错误，其中指出以下内容:
错误1错误LNK2019:函数_main
中引用的未解析的外部符号"int__cdecl MyNumber(void)"(?abc @@ YANXZ)
请帮帮我，
在此先感谢.

compiler,I am getting a linker error which states the following:
Error 1 error LNK2019: unresolved external symbol "int__cdecl MyNumber(void)" (?abc@@YANXZ) referenced in function _main

Please help me out,
Thanks in advance.

推荐答案

此错误表示您使用的函数在任何地方都未定义.看看是否缺少MyNumber()的函数定义.

This error means that you have a function that you used that is not defined anywhere. See if you''re missing the function definition for MyNumber().

我找到了解决方案，将代码从

Hi,
I got the solution,changed the code from

int MyNumber();cout << MyNumber;

更改为

int MyNumber=int();cout << MyNumber;

现在我可以将MyNumber初始化为0.谢谢你们的答复.

Now I am able to get the MyNumber initialized to 0.Thank you both for your replies.

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