重新学习编程的第四天 #include<iostream> #include<string> using namespace std; namespace China { float population = 14.1; std::string capital = "北京"; } namespace Japan { float population = 1.27; std::string capital = "东京"; } int main(void) { cout << "中国" << endl; cout << "首都：" << China::capital << endl; cout << "人口:" << China::population << endl; cout << "日本" << endl; cout << "首都：" << Japan::capital << endl; cout << "人口:" << Japan::population << endl; system("pause"); return 0; } 学习命名空间 挺有趣的哈哈