Temperature conversion...

Hi, I'm new at C programming, and I'm following the HowStuffWorks.com C programming tutorial/guide until I get some books- it has nice examples and lets you experiment. Anyways, I'm working on a temperature conversion program- a basic loop project. I'm trying to convert Fahrenheit to Celcius with user-inputted starting temp, ending temp, and increment value. Problem is, IT KEEPS REPEATING. I've spent an hour trying to figure out why, but i can't find the cause of it all. So here's the code. Thanks

Code:

---

#include <stdio.h>

int main()
{

float a, b, c, d;
 printf("Enter a value for the starting temperature in Fahrenheit:");
  scanf("%f", b);
  printf("Enter a value for the ending temperature in Fahrenheit:");
  scanf("%f", c);
  printf("Enter a value for the temperature increment value in Fahrenheit:");
  scanf("%f", d);
  a = b;
  printf("This is a Fahrenheit to Celcius Conversion Table!");
    while (a <= c)
    {
      if ((a > 98.6) && (a < (a + d)))
        {

          printf("%f degrees F = %f degrees C\n",
              98.6, (98.6 - 32.0) * 5.0 / 9.0);

        }

        printf("%f degrees F = %f degrees C\n",
            a, (a - 32.0) * 5.0 / 9.0);
        a = (a + d);

    }

    return 0;

}

---

You had a few minor errors that I fixed, this code works fine for me. You'll just want to format the output on your floats to whatever way you feel nessassary. I set the precision to two places.

Code:

---

#include <stdio.h>

int main()
{

float a, b, c, d;
 printf("Enter a value for the starting temperature in Fahrenheit:");
  scanf("%f", &b);    // You had b, should be &b
  printf("Enter a value for the ending temperature in Fahrenheit:");
  scanf("%f", &c);    // You had c, should be &c
  printf("Enter a value for the temperature increment value in Fahrenheit:");
  scanf("%f", &d);    // You had d, should be &d
  a = b;
  printf("This is a Fahrenheit to Celcius Conversion Table! \n"); // Don't forget your \n here
    while (a <= c)
    {
      if ((a > 98.6) && (a < (a + d)))
        {

          printf("%.2f degrees F = %.2f degrees C \n",
              98.6, (98.6 - 32.0) * 5.0 / 9.0);

        }

        printf("%.2f degrees F = %.2f degrees C \n",
            a, (a - 32.0) * 5.0 / 9.0);
        a = (a + d);
        }
   
    return 0;
}

---

Here is the output:

Code:

---

Enter a value for the starting temperature in Fahrenheit:52
Enter a value for the ending temperature in Fahrenheit:88
Enter a value for the temperature increment value in Fahrenheit:1
This is a Fahrenheit to Celcius Conversion Table!
52.00 degrees F = 11.11 degrees C
53.00 degrees F = 11.67 degrees C
54.00 degrees F = 12.22 degrees C
55.00 degrees F = 12.78 degrees C
56.00 degrees F = 13.33 degrees C
57.00 degrees F = 13.89 degrees C
58.00 degrees F = 14.44 degrees C
59.00 degrees F = 15.00 degrees C
60.00 degrees F = 15.56 degrees C
61.00 degrees F = 16.11 degrees C
62.00 degrees F = 16.67 degrees C
63.00 degrees F = 17.22 degrees C
64.00 degrees F = 17.78 degrees C
65.00 degrees F = 18.33 degrees C
66.00 degrees F = 18.89 degrees C
67.00 degrees F = 19.44 degrees C
68.00 degrees F = 20.00 degrees C
69.00 degrees F = 20.56 degrees C
70.00 degrees F = 21.11 degrees C
71.00 degrees F = 21.67 degrees C
72.00 degrees F = 22.22 degrees C
73.00 degrees F = 22.78 degrees C
74.00 degrees F = 23.33 degrees C
75.00 degrees F = 23.89 degrees C
76.00 degrees F = 24.44 degrees C
77.00 degrees F = 25.00 degrees C
78.00 degrees F = 25.56 degrees C
79.00 degrees F = 26.11 degrees C
80.00 degrees F = 26.67 degrees C
81.00 degrees F = 27.22 degrees C
82.00 degrees F = 27.78 degrees C
83.00 degrees F = 28.33 degrees C
84.00 degrees F = 28.89 degrees C
85.00 degrees F = 29.44 degrees C
86.00 degrees F = 30.00 degrees C
87.00 degrees F = 30.56 degrees C
88.00 degrees F = 31.11 degrees C

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Thanks a lot. Seemed to overlook the aspersand (sp?)... Works fine now! :D

ampersand. Sort of like asterisk. :)