Thanks everyone for the help, but this was the correct
answer.
I needed to do it like this......
(btw, I am using bloodshed :))
void main(void)
{
float gallons, miles, mpg, gallonaccumulator,
milesaccumulator, overall;
int counter;
gallonaccumulator = 0;
milesaccumulator = 0;
printf("Welcome to my totally awesome milage
calculator!.");
printf("\n\nThis program will calculate the miles per
gallon for you for three tanks of gas after you have
entered the gallons used and miles driven.\n\n");
for (counter=1; counter <=3; counter++)
{
if (counter == 1)
printf("Enter the number
of gallons used for tank#%i: ", counter);
else
printf("\nEnter the number
of gallons used for tank#%i: ", counter);
scanf("%f", &gallons);
gallonaccumulator =
gallonaccumulator + gallons;
fflush (stdin);
printf("Enter the number of miles
driven: ");
scanf("%f", &miles);
milesaccumulator =
milesaccumulator + miles;
fflush (stdin);
mpg = miles / gallons;
printf("*** The miles per gallon
for this tank is %.1f\n", mpg);
}
overall = milesaccumulator / gallonaccumulator;
printf("\nYour overall average miles per gallon
for three tanks is %.1f", overall);
printf("\n\nThank you for using my awesome
program!");
--- nobozoz <[EMAIL PROTECTED]> wrote:
> Z,
> I think this works ...
>
//-------------------------------------------------------------------------
> #include <stdio.h>
> /*Main program body*/
> void main(void)
> {
> float gallons, miles, mpg;
> int counter;
> for (counter=1; counter <=3; counter++)
> {
> printf("\nEnter the number of gallons used
> for tank#%i: ",
> counter);
> scanf("%f", &gallons);
> printf("Enter the number of miles driven:
> ");
> scanf("%f", &miles);
> mpg = miles / gallons;
> printf("*** The miles per gallon for this
> tank is %f \n", mpg);
> }
> printf("\n\r");
> printf("Enter any number to exit ...");
> scanf("%f", &miles);
> }
>
//-------------------------------------------------------------------------
> The big problem in the version you submitted is that
> mpg cannot be
> calculated correctly
> until BOTH gallons AND miles have been initialized.
> After gallons and miles
> have been
> entered, you want to calculate mpg and print the
> result and then repeat the
> same process
> two more times with different values for gallons or
> miles.
>
> You don't need the "if/then" to accomplish this
> pattern.
>
> Good luck with "c". It can be a very useful thing to
> know if you have a
> decent IDE and
> compiler. I used this:
> http://www.bloodshed.net/devcpp.html
>
> _jim
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf
> Of Zulfiqar Naushad
> Sent: Sunday, February 26, 2006 1:33 AM
> To: The Hardware List
> Subject: [H] C programming question
>
>
> I have some basic question regarding some C program
> that I have made just for fun (I am trying to teach
> myself C)
>
> Please have a look at the program below:
>
> If you compile it then the error will be self
> apparent, the first time it calculates the MPG it
> returns zero, the second mpg calculation is actually
> for the first one and so on :).
>
> #include <stdio.h>
>
> /*Main program body*/
>
> void main(void)
> {
> float gallons, miles, mpg;
> int counter;
> for (counter=1; counter <=3; counter++)
> {
> mpg = miles / gallons;
> if (counter == 1)
> printf("Enter the number of gallons used
> for tank#%i: ", counter);
> else
> printf("\nEnter the number of gallons used
> for tank#%i: ",
> counter);
> scanf("%f", &gallons);
> printf("Enter the number of miles driven:
> ");
> scanf("%f", &miles);
> printf("*** The miles per gallon for this
> tank is %f", mpg);
> }
> }
>
>
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