Initial commit

Chapter1/Section3/a.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+int main()
+{
+    FILE *fp;
+
+    fp = fopen("tmp", "r");
+    if (fp == NULL)
+    {
+        fprintf(stderr, "fopen():%s\n", strerror(errno));
+        exit(1);
+    }
+    puts("ok!");
+    exit(0);
+}