Match all instructions without arguments

src/grammars/mblf.pest

@@ -24,6 +24,10 @@ subb           =@{ "subb"   ~ spacing+ ~ num }
 subv           =@{ "subv"   ~ spacing+ ~ variable }
 
 copy           =@{ "copy"   ~ spacing+ ~ variable }
+setz           =@{ "setz" }
+
+getchr         =@{ "getchr" }
+print          =@{ "print" }
 
 instruction    =_{ var
                  | delvar
@@ -40,6 +44,10 @@ instruction    =_{ var
                  | subv
 
                  | copy
+                 | setz
+
+                 | getchr
+                 | print
 
                  | operator ~ (spacing+ ~ operand)?
                  }

src/main.rs

@@ -118,6 +118,18 @@ fn instruct(statement: Pair<Rule>, out: &mut Builder) {
             println!("Copy to variable '{}'", variable_name);
             out.append("copy\n");
         }
+        Rule::setz => {
+            println!("Set current variable to zero");
+            out.append("setz\n");
+        }
+        Rule::getchr => {
+            println!("Reading char from user input into current variable");
+            out.append("getchr\n");
+        }
+        Rule::print => {
+            println!("Printing current variable");
+            out.append("print\n");
+        }
         Rule::instruction => {
             out.append("\n");
         }