add some simple programs

both failing, finally get some work done here

codes/if_called.psol

@@ -0,0 +1,13 @@
+class Object
+  int itest(int n)
+    if_zero( n - 12)
+      "then".putstring()
+    else
+      "else".putstring()
+    end
+  end
+
+  int main()
+    itest(20)
+  end
+end

codes/if_else.psol

@@ -0,0 +1,10 @@
+class Object
+  int main()
+    int n = 10
+    if_zero( n - 12)
+      "then".putstring()
+    else
+      "else".putstring()
+    end
+  end
+end

codes/one.psol

@@ -1,5 +0,0 @@
-class Object
-  int main()
-    return 1
-  end
-end