moving from gitlab

003Cat/cat.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+
+FILE *openFile(const char *filename);
+void catFile(FILE *file);
+
+int main(int argc, char *argv[]) {
+
+  if (argc != 2) {
+    printf("error: missing file\nusage: cat <filename>\n");
+    return -1;
+  }
+
+  FILE *file = openFile(argv[1]);
+  if (!file) {
+    printf("error: file (%s) not found\n", argv[1]);
+    return -2;
+  }
+
+  catFile(file);
+
+  fclose(file);
+
+  return 0;
+}
+
+FILE *openFile(const char *filename) {
+  FILE *file;
+
+  file = fopen(filename, "r");
+
+  return file;
+}
+
+void catFile(FILE *file) {
+  char buf[512];
+  while (fgets(buf, 512, file)) {
+    printf("%s", buf);
+  }
+}