把做工程过程中经常用的内容段珍藏起来，下边资料是关于C++演示在不同的范围内不冲突使用同名变量的范例的内容。

#include <iostream>using std::cout;using std::endl;{ public:};{}{ return x;}int main(){ abc a; cout << "Scope within class abc: x = " << a.x << "nScope within namespace def: x = " << def::x << "nScope within function getx: x = " << getx() << "nScope within global scope : x = " << ::x << "nScope within local main function: x = " << x; { cout << "nScope within local code block: x = " << x; } return 0;}Scope within class abc: x = 10Scope within namespace def: x = 20Scope within function getx: x = 30Scope within global scope : x = 40Scope within local main function: x = 50Scope within local code block: x = 60