Add exit operand

src/interpret/operanddefinitions.cpp

@@ -170,6 +170,11 @@ namespace Interpret
 				return std::make_unique<ReturnFromFunctionStatement>();
 			}
 
+			case Token::OperandType::ExitProgram:
+			{
+				return std::make_unique<ExitProgramStatement>();
+			}
+
 			case Token::OperandType::LessThanInteger:
 			{
 				auto statement = std::make_unique<ControlFlowStatement>();
@@ -316,6 +321,7 @@ namespace Interpret
 			default:
 			std::printf("WARNING: returning default argument length of 0 for operand type %i\n", static_cast<int>(type));
 			case Token::OperandType::ReturnFromFunction:
+			case Token::OperandType::ExitProgram:
 			return 0;
 		}
 	}