[問題] extern 回傳值得問題...
就是我想要從我的副程式count()那邊裡面設一個 變數叫做 ha
然後用extern把值回傳給main
但卻出現這個錯誤:
bb.obj : error LNK2001: unresolved external symbol "double ha" (?ha@@3NA)
Debug/11.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
Creating browse info file...
-------------------------------------------------------------------------
程式碼:
#include <stdio.h>
void count(void);
int main(void) {
count();
extern double ha;
printf("%lf",ha);
return 0;
}
void count(void) {
static double ha=10;
static int c = 1;
printf("%d\n", c);
c++;
}
還是不太清楚是為什麼@@ 有請高人指點迷津...
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