Implementation of function power().

src/createCustomer.c

@@ -21,7 +21,6 @@ void collectCustomerProperties()
 	bool inputTooLong = false;
 	printf("To create a new user, enter the information required below.\n");
 	printf("Enter forename (max. 15 letters):\n");
-	userInput = getchar();
 	while(letterCounter<letterMaximum && (userInput=getchar())!='\n'){
 		*(instance.forename+letterCounter) = userInput;
 		++letterCounter;

src/loginCustomer.c

@@ -61,7 +61,6 @@ bool loginCustomer(customer_t *c)
 	bool foundCustomerEntryInFile = false;
 	unsigned int IDAsNumber = toUnsignedInteger(c->IDAsString); 
 	char *searchForThisString = generateCheckString(IDAsNumber,c->password);
-	printf("Searching for: %s\n", searchForThisString);
 	char *lineFromCustomerFile = calloc(40,sizeof(char));
 	FILE *readCustomerFile = fopen("CustomerData.txt", "r");
 	if(readCustomerFile==NULL){

src/stringManipulation.c

@@ -54,10 +54,10 @@ char *to_string(int number)
 	}
 }
 
-unsigned int powerOfTen(unsigned int n){
+unsigned int power(unsigned int b, unsigned int n){
 	unsigned int result = 1, ctr = 0;
 	while(ctr<n){
-		result *= 10;
+		result *= b;
 		++ctr;
 	}
 	return result;
@@ -68,7 +68,7 @@ unsigned int toUnsignedInteger(char *ID)
 	unsigned int result = 0;
 	int IDLength = strlen(ID);
 	for(int i=0, j = IDLength - 1;i<IDLength;++i,--j){
-		result += (*(ID+j) - '0') * powerOfTen(i);
+		result += (*(ID+j) - '0') * power(10,i);
 	}
 	return result;
 }

src/stringManipulation.h

@@ -6,4 +6,4 @@ char *stringConcatenation(char *, char *);
 char *to_string(int);
 char *generateCheckString(unsigned int, char *);
 unsigned int toUnsignedInteger(char *);
-unsigned int powerOfTen(unsigned int);
+unsigned int power(unsigned int, unsigned int);