Implement file opening

2 files changed, 26 insertions, 1 deletions

diff --git a/src/lib.c b/src/lib.c
new file mode 100644
index 0000000..ef92935
--- /dev/null
+++ b/src/lib.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void die(const char *message) {
+  perror(message);
+  exit(1);
+}
diff --git a/src/main.c b/src/main.c
index 03b2213..d038256 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,3 +1,21 @@
-int main(void) {
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "lib.h"
+
+int main(int argc, char *argv[]) {
+  if (argc < 2) {
+    printf("usage: catclone <FILE>\n");
+    die("args");
+  }
+
+  FILE *fp = fopen(argv[1], "r");
+
+  if (fp == NULL) {
+    die("fopen");
+  }
+
+  fclose(fp);
+
   return 0;
 }