我无法解决以下错误 [英] I can not fix the following errors

问题描述

// ConsoleApplication5.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <iostream>
#include <string.h>
#include <string>
#include <cstdlib>

char x;
using namespace std;

char map[4][4];

map[1][1] = {x};

int main()
{
	return 0;
}

_____________________________________________________________________



编译时我收到以下错误：



错误1错误C4430：缺少类型说明符 - 假定为int。注意：C ++不支持default-int



错误2错误C2369：'map'：重新定义;不同的下标



错误3智能感知：此声明没有存储类或类型说明符



我是在Windows 7上的Microsoft Visual Studio 2012 Express上运行此操作

_____________________________________________________________________

When I compile I get the following errors :

Error 1 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

Error 2 error C2369: 'map' : redefinition; different subscripts

Error 3 IntelliSense: this declaration has no storage class or type specifier

I'm running this on Microsoft Visual Studio 2012 Express on Windows 7

推荐答案

您只能在方法范围之外编写声明，因此在您编写时：

You can only write declarations outside of a method scope, so when you write:

map[1][1] = {x};

这是一个无效的陈述，因为它不是声明。为了使用它，将它放在main（）方法中，如：

That is an invalid statement because it is not a declaration. In order to use that, put it inside the main() method, like:

int main()
{
    map[1][1] = x;
    return 0;
}

但是，由于你没有用任何值初始化x，它会是一些随机值，或者你可能得到关于使用未初始化变量的警告。

However, since you did not initialize x with any value, it will be some random value or you may get a warning about using an uninitialized variable.

尝试此代码：

Try this code:

#include "stdafx.h"
#include <windows.h>
#include <iostream>
#include <string.h>
#include <string>
#include <cstdlib>

char x;
using namespace std;

char map[4][4];



int main()
{
	map[1][1] = { x };
	return 0;
}
</cstdlib></string></string.h></iostream></windows.h>

您只需将 map [1] [1] = {x}; 行移至 main（）方法。原因是：您可以将变量声明放在函数外部，但如果您尝试更改此变量的值，则必须在函数内部。

You just need to move the map[1][1] = { x }; line into the main() method. The reason: you can put variable declarations outside functions, but if you try to change the value of this variable, then this has to be inside a function.

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