定义一个二维数组并且把所有元素值赋0，如何改变某个元素的值；

[hai00jiao]

我定义了一个全局二维数组 int c[5][25]={0};//把每个元素值都赋为0
switch(n）
{
case 0:
c[0][0]=1;
break;
case 1:
c[1][0]=1;
break;
case 2:
c[2][0]=1;
break;
case 3:
c[3][0]=1;
break;
case 4:
c[4][0]=1;
break;

}
这样赋值不行，错误
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(192) : error C2065: 'c' : undeclared identifier
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(192) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(192) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(192) : error C2106: '=' : left operand must be l-value
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(195) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(195) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(195) : error C2106: '=' : left operand must be l-value
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(198) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(198) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(198) : error C2106: '=' : left operand must be l-value
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(201) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(201) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(201) : error C2106: '=' : left operand must be l-value
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(204) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(204) : error C2109: subscript requires array or pointer type
D:\Program Files\Microsoft Visual Studio\MyProjects\sheji3\sheji3Dlg.cpp(204) : error C2106: '=' : left operand must be l-value

我是菜鸟啊？高手多包涵

[hai00jiao]

谢谢已经解决。

[fishion]

参考定义全局变量
在stdafx.cpp中加入:
int myInt;
然后在stdafx.h中加入:
extern int myInt

[xiuxianshen]

你的全局变量在哪里定义的啊

[oldn123]

你在哪定义的这个int c[5][25]={0};
如果在.h里记得include，如果在cpp里提到最上面去定义这类全局变量

[huangjunchishi]

请问你是怎么解决的啊？