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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ################extern################# extern_main.cpp 代碼片段: #include <iostream> extern void tt(); int tmp = 10; int main(){ tt(); } support.cpp代碼片段: #include <iostream> using namespace std; extern int tmp; void tt(void){ cout << tmp; } 編譯:g++ support.cpp extern_main.cpp -o extern #################static################# static.cpp代碼片段: #include <iostream> using namespace std; void func(void); int count = 10; int main(){ while(count--){ func(); } return 0; } void func(void){ int i = 5; i++; cout << i << '|'; cout << count << endl; } ############函數的聲明############# #include <iostream> using namespace std; void func(void); void cc(int,int);//無需指定參數名稱 int count = 10; int main(){ while(count--){ cc(3,5); } return 0; } void func(void){ int i = 5; i++; cout << i << '|'; cout << count << endl; } void cc(int a,int b){ cout << a*b; }
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