add argv namespace files

C++/argv.cpp

@@ -0,0 +1,11 @@
+#include <stdlib.h>
+#include <iostream>
+using namespace std;
+
+//int main(int argc, const char * argv[])
+int main(int argc, char * argv[])
+{
+ cout << "argc count is:" << argc << endl;
+ cout << "argv value is:" << argv[0] << endl;
+ return 0;
+}

C++/namespace.cpp

@@ -0,0 +1,65 @@
+#include <stdlib.h>
+#include <iostream>
+using namespace std;
+
+// 定义第一个命名空间
+namespace stu
+{
+ int x (100);
+ void fun()
+ {
+ cout << "hello world!!!" << endl;
+ }
+}
+
+// 定义第二个命名空间
+namespace myNum
+{
+ int x;
+ int y;
+
+ int setNum()
+ {
+ cout << "请输入整型:";
+ cin >> x >> y;
+
+ cout << "Y is:" << y << endl;
+
+ return x;
+ }
+}
+
+// 定义主入口
+int main()
+{
+ bool flag (false);
+ int b (10);
+ cout << flag << " == " << stu::x << endl;
+
+ stu::fun();
+
+ myNum::setNum();
+
+ bool isFlag = false;
+
+ if(myNum::x % 2 ==0)
+ {
+ isFlag = false;
+ }
+ else
+ {
+ isFlag = true;
+ }
+
+ if(isFlag)
+ {
+ cout << myNum::x << " 是奇数" << endl;
+ }
+ else
+ {
+ cout << myNum::x << " 是偶数" << endl;
+ }
+ return 0;
+}
+
+/* vim: set ts=4 sw=4 sts=4 tw=100 */