delete original app contents of xiuos

APP_Framework/Applications/cppmain.cpp

@@ -0,0 +1,116 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+#include <xiuos.h>
+#include <stdio.h>
+#include <cstdlib>
+using namespace std;
+extern "C" void KPrintf(const char *fmt, ...);
+
+class Animal    //parent class
+
+{
+
+public:
+
+    virtual void Eat()
+    {
+
+        KPrintf("eat\n");
+
+    }
+
+    void Sleep()
+    {
+        KPrintf("sleep\n");
+    }
+
+
+};
+
+class Fish :public Animal    //subclass
+{
+
+public:
+
+    void Eat()
+    {
+        KPrintf("fish eat\n");
+
+
+    }
+};
+
+void Doeat(Animal& animal)
+{
+    animal.Eat();
+}
+
+void MemTest2()
+{
+    int i;
+    char *ptr = NULL; /* memory pointer */
+
+    for (i = 0; ; i++) {
+        /* allocate (1<<i) bytes memory every single time */
+        ptr = (char *)operator new(1 << i);
+
+        /* if allocate successfully */
+        if (ptr != NULL) {
+            KPrintf("get memory :%d byte\n", (1 << i));
+            /* release the memory */
+            operator delete(ptr);
+            KPrintf("free memory :%d byte\n", (1 << i));
+            ptr = NULL;
+        } else {
+            KPrintf("try to get %d byte memory failed!\n", (1 << i));
+            break;
+            //return 0;
+        }
+    }
+
+}
+
+void OverLoadTest(int a)
+{
+    KPrintf("output is a int number: %d\n", a);
+}
+
+void OverLoadTestDouble(int a,int b )
+{
+    KPrintf("output is 2 int number: %d and %d\n", a,b);
+}
+
+template<typename T>
+void MySwap(T& a, T& b)
+{
+    T temp = a;
+    a = b;
+    b = temp;
+}
+
+extern "C" int cppmain(void)
+{
+    MemTest2();
+
+    class Fish fish;
+    Doeat(fish);
+
+    int a = 3;
+    int b = 5;
+    void OverLoadTestDouble(int a, int b);
+    OverLoadTestDouble(a, b);
+    MySwap(a,b);
+    KPrintf("with template the output is: %d and %d\n", a,b);
+
+    return 0;
+}