Add grammar for calculator

psConfig/exercise/psConfig_jniermann.conf

@@ -19,4 +19,12 @@ rsbscope= /speechrec/psa/grammar_jniermann;
 bestpath=no;
 autoload=yes;
 
+[pocketsphinxinstance]
+name=calculator;
+jsgf=../../psGrammar/exercise/calculatorGrammar_jniermann.jsgf;
+rsbscope= /speechrec/psa/calculatorGrammar_jniermann;
+bestpath=no;
+autoload=yes;
+
+
 

psGrammar/exercise/calculatorGrammar_jniermann.jsgf

+#JSGF V1.0;
+grammar calc;
+public <calc> =(<add> | <sub>) <num> [and] <num>; 
+
+<num> = (one|two|three|four|five|six|seven|eight|nine|zero);
+<add> = (add);
+<sub> = (sub);
+