update

basic_content/macro/do_while.cpp

@@ -0,0 +1,76 @@
+#include <iostream>
+#include <malloc.h>
+
+using namespace std;
+#define f1() cout<<"f1()"<<endl;
+#define f2() cout<<"f2()"<<endl;
+
+#define fun() {f1();f2();}
+#define fun1() \
+    do{ \
+        f1();\
+        f2();\
+    }while(0)
+
+int f() {
+    int *p = (int *)malloc(sizeof(int));
+    *p = 10;
+    cout<<*p<<endl;
+#ifndef DEBUG
+    int error=1;
+#endif
+    if(error)
+        goto END;
+
+    // dosomething
+END:
+    cout<<"free"<<endl;
+    free(p);
+    return 0;
+}
+
+int ff() {
+
+    int *p = (int *)malloc(sizeof(int));
+    *p = 10;
+    cout<<*p<<endl;
+
+    do{
+#ifndef DEBUG
+        int error=1;
+#endif
+        if(error)
+            break;
+        //dosomething
+    }while(0);
+
+    cout<<"free"<<endl;
+    free(p);
+    return 0;
+}
+
+
+int fc()
+{
+    int k1 = 10;
+    cout<<k1<<endl;
+    do{
+        int k1 = 100;
+        cout<<k1<<endl;
+    }while(0);    
+    cout<<k1<<endl;
+}
+
+int main() {
+
+    if(1>0)
+        fun();
+
+    if(2>0)
+        fun1();
+
+    f();
+    ff();
+    fc();
+    return 0;
+}