Temperature conversion...

This is a discussion on Temperature conversion... within the C Programming forums, part of the General Programming Boards category; Hi, I'm new at C programming, and I'm following the HowStuffWorks.com C programming tutorial/guide until I get some books- it ...

  1. #1
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    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;
    
    }

  2. #2
    Devil's Advocate SlyMaelstrom's Avatar
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    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
    Last edited by SlyMaelstrom; 10-21-2005 at 12:16 AM.
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  3. #3
    Registered User
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    Thanks a lot. Seemed to overlook the aspersand (sp?)... Works fine now!

  4. #4
    Frequently Quite Prolix dwks's Avatar
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    ampersand. Sort of like asterisk.
    dwk

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