c program help

[Sleepwalker817]

Hi, I need some help with a program that determines the kilometers per liter for 4 tanks of gasoline that a user fills in his/her car.

Here is what I have so far:

#include<stdio.h>
#include<conio.h>
int main()
{
 int km, i;
 float res, lt;

 clrscr();

 printf("Welcome to the Sears kilometers per liter calculator./n/n");

 for(i=1;i<=4;i++)
 {
  printf("/n/nEnter the number of kilometer for tank %d#: ",i);
  scanf("%d", &km);
  printf("Enter the number of liters used by tank %d#: ",i);
  scanf("%f", <);
  res = (float)km / lt;
  printf("*** The kilometers per liter for tank %d# is %.1f", i, res);
 }
 getchar();
 printf("Your overall average kilometers per liter for 4 tanks is /n/n");
 printf("Thanks for using the Sears KPL calculator program.");
}

As it is now, I get the error message: parse error before '<'.

Thanks in advance.

[xuftugulus]

  scanf("&#37;f", <);

< is not a valid identifier name. Maybe try &lt.

[matsp]

  scanf("%f", <);

< is not a valid identifier name. Maybe try &lt.

That's probably a HTML translation problem, I would think. (&lt in HTML becomes '<')

--
Mats

[slingerland3g]

Research on the pitfalls of using scanf for user input.

[mike_g]

Firstly to make your new lines display correctly use \n instead of /n.

To get your final calculation add a variable to hold sum of your results. When you exit the loop then divide the sum by then number of tanks of fuel. That will give you your average.

[Sleepwalker817]

Thanks to all of you for your help so far. This is my revised version of the program. I'm still not too sure about how to get the loop average so continued input is still appreciated.

#include<stdio.h>
#include<conio.h>
int main()
{
 int km, i;
 float res, lt, sum, avg;
 sum = 0;
 avg = sum/4;

 printf("Welcome to the Sears kilometers per liter calculator.\n\n");

 for(i=1;i<=4;i++)
 {
  printf("\n\nEnter the number of kilometer for tank &#37;d#: ",i);
  scanf("%d", &km);
  printf("Enter the number of liters used by tank %d#: ",i);
  scanf("%f", &lt);
  res = (float)km / lt;
  printf("*** The kilometers per liter for tank %d# is %.1f", i, res);
  sum = sum + res;
 }
 printf("Your overall average kilometers per liter for 4 tanks is %.1f", avg);
 printf("\n\nThanks for using the Sears KPL calculator program.");
 getchar();
}

[mike_g]

Just calculate average after you finish you loop; not before it.