• C

Really simple question !

Hello,

I need a very simple program. I am just starting to learn C by myself and I have no book. If you know a good book, let me know.
I want to know how to do the following program :
(example of passing parameters to a function)

-Ask the user to input 4 real numbers at the command prompt
-send the numbers to a function to perform the follwoing
 value=(a+b squared) + (c+d)squared)

and return the value to the main program and print result.
I need a wroking program please. I want to cut and paste. Thanks
haielAsked:
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rocket96Commented:
I won't do questions for you (EE has strict rules about doing "homework" problems).

I can point out good books:
Illustrating C by Donald Alcock ISBN 0521468213 - this is a great book for beginners.

The C language by Ritchie and Kernighan - de facto C book...its great (tho it might be a bit outdated). its treatment of pointers and arrays is fabulous.
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haielAuthor Commented:
Who said this is a homeworke assignment. I am 42 years my friend.If I have a book I am sure this can be found as exaple oe something.Anyway thanks.
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mattropeCommented:
Since you are just starting C programming, I didn't use anything too complicated like arrays.  Here's a program that does what you asked for.


#include <stdio.h>

double calc(double,double,double,double);

void main(void) {
        double a,b,c,d;         /** Input numbers **/
        double res;             /** Result of expression evaluation **/

        printf("Enter A: ");
        scanf("%lf",&a);

        printf("Enter B: ");
        scanf("%lf",&b);

        printf("Enter C: ");
        scanf("%lf",&c);

        printf("Enter D: ");
        scanf("%lf",&d);

        res = calc(a,b,c,d);
        printf("The result is: %f\n\n",res);

}

double calc(double w, double x, double y, double z) {
        return ((w+x)*(w+x) + (y+z)*(y+z));
}
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haielAuthor Commented:
Thanks alot.
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