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Questionneed code to check if the value is numeric in C Pin
Mikerush74-Oct-12 6:49
memberMikerush74-Oct-12 6:49 
I am student, taking C programming now.
I have assignment to write function to check if inputed data is numbers. if not - it should write that, and ask to enter number again.
I wrote code, to write error message, but dont know how to make program to work on next input.. should I call the Main function again ?

int main()
{

double hours; //hours worked in a week
double payrate; // hourly salary
double grosspay; //total weekly payment
int k; //number of values read

printf ("Enter number of hours, and hourly pay (or press 0 to exit) \n");

while ((k = scanf ("%lf%lf", &hours, &payrate))==2)
{

if (isdigit(hours) !=0)
return hours;
else
printf ("You entered invalid data, please enter number of hours \n");


if (isdigit(payrate) !=0)
return payrate;
else
printf ("You entered invalid data, please enter payrate \n");

if (hours==0 || payrate==0)
{
printf ("Good Bye. \n\n");
system("PAUSE");
return 0;
}

double grosspay;
grosspay = calculateGrossPay(hours, payrate);

printf ("Hours worked: %.2f\n", hours);
printf ("Hourly Rate: %.2f\n\n", payrate);
printf ("Your weekly payment is: $ %.2f \n\n\n", grosspay);
AnswerRe: need code to check if the value is numeric in C Pin
Richard MacCutchan4-Oct-12 7:22
mvpRichard MacCutchan4-Oct-12 7:22 
GeneralRe: need code to check if the value is numeric in C Pin
Mikerush74-Oct-12 7:50
memberMikerush74-Oct-12 7:50 
GeneralRe: need code to check if the value is numeric in C Pin
Richard MacCutchan4-Oct-12 7:53
mvpRichard MacCutchan4-Oct-12 7:53 
AnswerRe: need code to check if the value is numeric in C Pin
CPallini4-Oct-12 9:48
mvpCPallini4-Oct-12 9:48 
QuestionRe: need code to check if the value is numeric in C Pin
DavidCrow4-Oct-12 9:55
memberDavidCrow4-Oct-12 9:55 
AnswerRe: need code to check if the value is numeric in C Pin
Richard MacCutchan4-Oct-12 21:37
mvpRichard MacCutchan4-Oct-12 21:37 
GeneralRe: need code to check if the value is numeric in C Pin
Mikerush75-Oct-12 8:30
memberMikerush75-Oct-12 8:30 
AnswerRe: need code to check if the value is numeric in C Pin
C Mahesh8-Oct-12 22:24
memberC Mahesh8-Oct-12 22:24 

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