created main.cpp

checking for --help and -h flags
checking for arg count
checking if specified file exists

main.cpp

@@ -0,0 +1,30 @@
+#include <iostream>
+#include <string>
+#include <filesystem>
+using std::cout;
+namespace fs = std::filesystem;
+
+int main(int argc, char *argv[]) {
+    for (int i = 0; i <= argc - 1; i++) {
+        std::string arg = argv[i];
+        if (arg == "--help" || arg == "-h") {
+            cout << "help flag detected!";
+            return 0;
+        }
+    }
+
+    if (argc != 2) {
+        cout << "Please specify image file. " << argv[0] << " imagefile.jpg";
+    } else {
+        std::string imagefile = argv[1];
+        cout << "File: " << imagefile << "\n";
+
+        if (!fs::is_regular_file(imagefile)) {
+            std::cout << "File not found: " << imagefile << "\n";
+            return 1;
+        }
+    }
+
+    return 0;
+}
+