what's the problem here?

[AshFooYoung]

I won't bore you with details, but this program I've been working on crashes every time, right after I enter the value for the first variable and I don't have a clue why. Any ideas?

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/* This program calculates and displays a car's mpg for an indefinite number of tankfulls, then calculates and displays the average mpg. */

#include <stdio.h>

int main()
{
float gal, mil, mpg;
int sum = 0, count = 0;

printf( "Enter the gallons used (-1 to end): ");
scanf( "%f", gal );

while ( x != -1 )
{
printf( "Enter the miles driven: " );
scanf( "%f", mil );
mpg = mil / x;
printf( "The mpg for this tank was %f", mpg);
sum += mpg;
++count;
printf( "Enter the gallons used (-1 to end): ");
scanf( "%f", gal );
}

printf( "The overall average mpg was %f", sum / count );

return 0;

}

-----------

Thanks.

Ash

[zen]

scanf() takes the address of the variable so you want something like -

scanf( "%f", &mil );

[AshFooYoung]

<smacks self on head>

duh!

Thanks, zen.

Ash