修改文件结构。

POP/02/Exercise01.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+int main() {
+    short a = 10;
+    int b = 100;
+    int short_length = sizeof a;
+    int int_length = sizeof(b);
+    int long_length = sizeof(long);
+    int char_length = sizeof (char) ;
+    int longdouble_length = sizeof(long double);
+    printf("short=%d, int=%d, long=%d, char=%d long double=%d\n", short_length,
+    int_length, long_length, char_length, longdouble_length);
+    return 0;
+}