add example with global variable.

1 files changed, 36 insertions, 0 deletions

diff --git a/scope2.c b/scope2.c
new file mode 100644
index 0000000..30229c1
--- /dev/null
+++ b/scope2.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+
+int j = 42;
+
+void func3()
+{
+  int i = 11, j = 999;
+  printf("\t\t\t[in func3] i = %d, j = %d\n", i, j);
+}
+
+void func2()
+{
+  int i = 7;
+  printf("\t\t[in func2] i = %d, j = %d\n", i, j);
+  printf("\t\t[in func2] setting j = 1337\n");
+  j = 1337;
+  func3();
+  printf("\t\t[back in func2] i = %d, j = %d\n", i, j);
+}
+
+void func1()
+{
+  int i = 5;
+  printf("\t[in func1] i = %d, j = %d\n", i, j);
+  func2();
+  printf("\t[back in func1] i = %d, j = %d\n", i, j);
+}
+
+int main(int argc, const char *argv[])
+{
+  int i = 3;
+  printf("[in main] i = %d, j = %d\n", i, j);
+  func1();
+  printf("[back in main] i = %d, j = %d\n", i, j);
+  return 0;
+}