[转载] Help!! variable scope ????# CS - 计算机科学
c*n
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【 以下文字转载自 Programming 讨论区 】
【 原文由 creation 所发表 】
I think I read somewher before that
the scopes of global variables in C are not cleanly defined
if you have multiple definitions of a variable in different files,
some compilers take them to be "static", some take as "global"
e.g. I have a.c, and b.c
////////////////////////////
// a.c
int n;
void fun();
void main(){
n=1;
fun();
printf("main: %d\n", n);
}
//////////////
// b.c
int n;
void fun(){
n=2;
/////////////////////////////////
【 原文由 creation 所发表 】
I think I read somewher before that
the scopes of global variables in C are not cleanly defined
if you have multiple definitions of a variable in different files,
some compilers take them to be "static", some take as "global"
e.g. I have a.c, and b.c
////////////////////////////
// a.c
int n;
void fun();
void main(){
n=1;
fun();
printf("main: %d\n", n);
}
//////////////
// b.c
int n;
void fun(){
n=2;
/////////////////////////////////
