Erste Versuche, Problem: tar öffnet nicht

cmake-build-debug/.ninja_log

@@ -0,0 +1,27 @@
+# ninja log v5
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cmake-build-debug/Testing/Temporary/LastTest.log

@@ -1,3 +1,3 @@
-Start testing: Feb 04 18:31 CET
+Start testing: Feb 04 18:59 CET
 ----------------------------------------------------------
-End testing: Feb 04 18:31 CET
+End testing: Feb 04 18:59 CET

main.cpp

@@ -1,6 +1,21 @@
 #include <iostream>
+#include <fstream>
+#include <string>
 
 int main() {
-    std::cout << "Hello, World!" << std::endl;
+    if (std::ifstream datei{"test.tar", std::ios::binary}) {
+        int buffersize = 512;
+        char *buffer;
+
+        datei.read(buffer, buffersize);
+
+
+        datei.close();
+
+        std::cout << buffer[0] << buffer[1] << std::endl;
+    }
+
+    else
+        std::cout << " Fehler ! " << std::endl;
     return 0;
 }