refactoring: rename stod to balanceToDouble and its internal variable. The purpose of this function is to convert the user input for the account balance into a double and the new names states this purpose better.

src/helperFunctions.c

@@ -117,22 +117,22 @@ char *generateCheckString(unsigned int customerID, char *customerPassword)
 	return checkString;
 }
 
-double stod(char *s)
+double balanceToDouble(char *balanceAsString)
 {
 	double result, power;
 	int i=0, sign;
-	sign = (*(s) == '-') ? -1 : 1;
-	if(*(s)=='+'||*(s)=='-'){
+	sign = (*(balanceAsString) == '-') ? -1 : 1;
+	if(*(balanceAsString)=='+'||*(balanceAsString)=='-'){
 		++i;
 	}
-	for(result = 0.0; *(s+i)!='.';++i){
-		result = 10.0 * result + (*(s+i) - '0');
+	for(result = 0.0; *(balanceAsString+i)!='.';++i){
+		result = 10.0 * result + (*(balanceAsString+i) - '0');
 	}
-	if(*(s+i)=='.'){
+	if(*(balanceAsString+i)=='.'){
 		++i;
 	}
-	for(power = 1.0;*(s+i)!='\0';++i){
-		result = 10.0 * result + (*(s+i)- '0');
+	for(power = 1.0;*(balanceAsString+i)!='\0';++i){
+		result = 10.0 * result + (*(balanceAsString+i)- '0');
 		power *= 10.0;
 	}
 	return sign * result / power;

src/helperFunctions.h

@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdbool.h>
+#define UNITY_INCLUDE_CONFIG_H
 char *stringConcatenation(char *, char *);
 char *to_string(int);
 char *generateCheckString(unsigned int, char *);
@@ -11,5 +12,5 @@ unsigned int toUnsignedInteger(char *);
 unsigned int power(unsigned int, unsigned int);
 bool everyCharacterIsDigit(char *);
 bool isLetterOfAlphabet(char *);
-double stod(char *);
+double balanceToDouble(char *);
 #endif

test/test_helperFunctions.c

@@ -2,9 +2,9 @@
 #include <time.h>
 #include <string.h>
 #include <unity.h>
+#include "unity_config.h"
 #include "../src/helperFunctions.c"
 
-
 void test_isLetterOfAlphabet()
 {
 	/*test block 1*/