a value of type "char*" cannot be assigned to an entity of type double

[rdavi]

I have a struct that stores account number, name, last name, balance and last payment amount. I created a .csv file, which contains the following info

1, homer, simpson, 20.34, 56.77

my program can read in the file and tokenize the commas

my problem is, when I start to assign the tokens to the struct elements, I get an error when I try to assign the value stored in the token pointer, which points to balance to a double in my struct.

I think i need to cast it, but I cannot seem to get it.

#define MAX_LENGTH_BUFFER 50
#define MAX_LENGTH_TOKEN 50

struct clientData
{
	int acctNum;
	char lastName[15];
	char firstName[10];
	double balance;
	double lastPayAmt;
};

typedef struct clientData ClientData;

int main(void)
{
	static int tokenCount = 0; //number of tokens
	static char *tokenArray[MAX_LENGTH_TOKEN]; // stores delimeted tokens

	char *tokenPtr; //points to tokens in string
	char *separators = ","; // delimeter

	FILE *cfPtr; // file pointer to .csv file
	char buffer[MAX_LENGTH_BUFFER + 1]; // untokenized string
	int i; // counter
	int ch; // single character

	// create clientData with default data
	ClientData client = { 0, "", "", 0.0, 0.0 };

	// fopen opens the file; exits if file cannot be opened
	if ((cfPtr = fopen("accounts.csv", "r")) == NULL)
	{
		printf("File could not be opened.\n");
	}
	else
	{
		//extracts each character from .csv file and stores it
		// in the buffer array
		for (i = 0; (i < (sizeof(buffer) - 1) &&
			(ch = fgetc(cfPtr))); i++) {
			buffer[i] = ch;
		}
		buffer[i] = '\0'; // append null at the end of string
		
		tokenPtr = strtok(buffer, separators);// tokenize commas in string

		//tokenizing the string
		while (tokenPtr != NULL) {
			tokenArray[tokenCount++] = tokenPtr;
			tokenPtr = strtok(NULL, separators);
		}
		// assgining each token to the struct elements
		client.acctNum = tokenArray[0];
		strcpy(client.firstName, tokenArray[1]);
		strcpy(client.lastName, tokenArray[2]);
		client.balance = tokenArray[3]; // ERROR IS HERE
                sscanf(tokenArray[3], "%lf", &client.balance); //FIX

		//printing assigned struct variables
		printf("%s \t", client.acctNum);
		printf("%s \t", client.firstName);
		printf("%s", client.lastName);

		
		fclose(cfPtr); // fclose closes the file
	}
	_getch();
	return 0;
}

[keskiverto]

No. Not cast. Convert.

You have to convert text into a numeric value.
Same applies to that integer field too. The value of char '3' is not 3 in the ASCII table.

Perhaps something like:
http://www.cplusplus.com/reference/cstdio/sscanf/

[rdavi]

thanks that did the trick!