Problem with c code, trying to find area of a rectangle?

Question

Here's the code I've got so far. I think it's something to do with trying to call with two variables, since my code worked fine finding the area of a circle. I'm just not sure how else to do it. Any help is appreciated!

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

float rectangle(float h, w)

{

float a;

float p;

a = h*w;

p = 2*(h+w);

printf("rectangle has an area of %f and a base perimeter of %f\n", a, p);

return (h, w);

}

int main(void)

{

float w;

float h;

printf("Enter height and width: ");

fflush(stdout);

scanf("%f%f", &h, &w);

rectangle(h, w);

return EXIT_SUCCESS;

}

Update:

Unfortunately it still isn't working with the return statement modified.

Anas Imtiaz · Accepted Answer

1- Incorrect function definition i.e. float rectangle(float h, w)
2- You cannot return more than 1 variables from a function.
3- Logical error: your function does not need a return type. 
Try this code: 
#include <stdio.h>
 
void rectangle(double height, double width)
{
        printf("&#92;nArea:&#92;t&#92;t%lf", height*width);
        printf("&#92;nPerimeter:&#92;t%lf", 2*(height+width));
}
int main()
{
        double height, width;
        printf("Enter height and width of rectangle:&#92;t");
        scanf("%lf%lf", &height, &width);
        
        rectangle(height, width);
        return 0;
}
For code + sample run: http://ideone.com/23AlB

ʄaçade · Answer

return (h, w);

You cannot return TWO values from a function.  Try returning the area or  just  the perimeter.

Here is a tip:  Do not name your functions as  nouns.  Use  a verb or verb-phrase.  Instead of "rectangle", call it "getRectangleArea ()" of "findRectPerimeter ()".  That way, you will start to think naturally in terms of "What does this function give to me?"

Added:  On the other hand, you are not using the return value anyway.  The caller ignores it.  So you may as well return nothing.
Have you tried inserting a delimiter (space?) between the %f and the second %f in the scanf?

uyeda · Answer

this query get requested plenty even as they first use visible c++ ide alot. in case your software compiled outstanding, nonetheless this device may desire to run and disappear till now you get to be certain the outcomes. you will possibly ought to word device("pause") to pause this device at the tip of your software.

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Problem with c code, trying to find area of a rectangle?

3 Answers