优化了命名

C07-函数/func.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void c(void)
+{
+    printf("[%s]begin!\n", __FUNCTION__);
+    printf("[%s]end!\n", __FUNCTION__);
+}
+
+void b(void)
+{
+    printf("[%s]begin!\n", __FUNCTION__);
+    printf("[%s]call c()!\n", __FUNCTION__);
+    c();
+    printf("[%s]c() returned!\n", __FUNCTION__);
+    printf("[%s]end!\n", __FUNCTION__);
+}
+
+void a(void)
+{
+    printf("[%s]begin!\n", __FUNCTION__);
+    printf("[%s]call b()!\n", __FUNCTION__);
+    b();
+    printf("[%s]b() returned!\n", __FUNCTION__);
+    printf("[%s]end!\n", __FUNCTION__);
+}
+
+int main()
+{
+    printf("[%s]begin!\n", __FUNCTION__);
+    printf("[%s]call a()!\n", __FUNCTION__);
+    a();
+    printf("[%s]a() returned!\n", __FUNCTION__);
+    printf("[%s]end!\n", __FUNCTION__);
+    // out:
+    // [main]begin!
+    // [main]call a()!
+    // [a]begin!
+    // [a]call b()!
+    // [b]begin!
+    // [b]call c()!
+    // [c]begin!
+    // [c]end!
+    // [b]c() returned!
+    // [b]end!
+    // [a]b() returned!
+    // [a]end!
+    // [main]a() returned!
+    // [main]end!
+
+    exit(0);
+}