Need some help with some code

Here is my program... cant get the square meters and square feet to calculate. What am i doing wrong. I appreciate any help you can give....

not homework just an excercise.



#include <stdio.h>

Code:

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int main()
{

        /* Vaible declarations */
        int cv_factor=36*36;        /* Conversion factor to convert  */
        int length_yds;                                /* Length in yards; input by user  */
        int width_yds;                                /* Width in yards; input by user  */
        int area_in_yards;
        int area_in_feet;
        int square_yards;
        int square_feet;
        int square_inches;
        int square_meters;
        int area_in_inches;
        int feet_cv_factor=3*3;                /* Conversion factor to convert  */
                /* Accept user input for length and width of lawn in yards  */
                printf("input length and width of lawn in yards  ");
                scanf("%d%d", &length_yds, &width_yds);
                /* Compute area of lawn in square yards, square feet, square inches and square meters */
                area_in_yards= (length_yds * width_yds);
                area_in_feet= (area_in_yards * feet_cv_factor);
                square_inches= (area_in_yards * cv_factor);
                square_feet= (area_in_yards * 9);
                square_meters= (area_in_yards * 0.83612736);
                printf("\Lawn in square yards = %d\n", area_in_yards);
                printf("Lawn in square feet = %d\n", square_feet);
                printf("\Lawn in square inches = %d\n", square_inches);
                printf("\Lawn in square meters = %d\n", square_meters);
                return 0;
}

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Code:

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scanf("%d%d", &length_yds, &width_yds);

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Make that two seperate scanfs.

Code:

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scanf("%d", &length_yds);
scanf("%d", &width_yds);

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Also you might wanna make some of those into floating point variables.

Works for me?

Output:

Code:

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input length and width of lawn in yards  10 10
Lawn in square yards = 100
Lawn in square feet = 900
Lawn in square inches = 129600
Lawn in square meters = 83
Press any key to continue . . .

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Are you saying that when you run my code and enter 10 10 it works for you. On my computer using visual studio 2003 , lawn in square feet shows 0 and lawn in square meters shows 0. Did you do any adjustments

Thanks guys... it was driving me crazy. i have a bunch of excercises to do and so little time to do them.. at my slow rate of gettting the program to the point above i should be done in a year.... thanks again for the help...

Quote:

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Originally Posted by Mshock

Are you saying that when you run my code and enter 10 10 it works for you. On my computer using visual studio 2003 , lawn in square feet shows 0 and lawn in square meters shows 0. Did you do any adjustments

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That's what I am saying, no adjustments, I'm using vs2005

Maybe there's a difference if you compile it as c++ or c. I used c++ but since you posted in the c forum I am guessing you compiled as c

In general the code should work fine ( I have no Idea if the conversion-factors are right but I assume they are ).
There is a problem with the conversion to square meters. You are using ints to hold the results. so

Code:

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square_meters= (area_in_yards * 0.83612736);

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will not calculate an accurate value.
The expression (area_in_yards * 0.83612736) will produce a double and this will be converted to an int by just discarding ( not rounding ) the digits after the decimal point. That's why for an input of 1x1 yards you will get a result of 0 square-meters.
Kurt