diff --git a/src/helperFunctions.c b/src/helperFunctions.c
index c3b2513..2fd5249 100644
--- a/src/helperFunctions.c
+++ b/src/helperFunctions.c
@@ -137,3 +137,8 @@ double balanceToDouble(char *balanceAsString)
 	}
 	return sign * result / power;
 }
+bool charIsUp(char c)
+{
+	bool result = (c>='A'&&c<='Z') ? true : false;
+	return result;
+}
diff --git a/src/helperFunctions.h b/src/helperFunctions.h
index 9656ab7..ba68d57 100644
--- a/src/helperFunctions.h
+++ b/src/helperFunctions.h
@@ -13,4 +13,5 @@ unsigned int power(unsigned int, unsigned int);
 bool everyCharacterIsDigit(char *);
 bool isLetterOfAlphabet(char *);
 double balanceToDouble(char *);
+bool charIsUp(char );
 #endif