Jonas Altrock ew20b126@technikum-wien.at

To overview.

The whole source file u3_cube.c.

/* Compile with `clang -std=c99 -Wall -o u3_cube u3_cube.c`
/* Test with `../checkproject u3_cube` */

Include C-libraries for input/output.

#include <stdio.h>
#include <stdlib.h>

Exercise 3: Expressions

Calculate the volume and the surface of a cube.

Details

Read the edge length of a cube (as a decimal number). Then print the volume and the surface area. The result should be printed with two digits after the decimal point.

Example

Input:

2.5

Output:

Volume: 15.63
Surface Area: 37.50

main()

int main() {

We work width a double precision variable.

    double d;

The scanf format code %lf means long float, which is a double.

    scanf("%lf", &d);

Directly pass the calculation results to printf, ensuring two decimal places with the .2 format code prefix.

    printf("Volume: %.2lf\n", d * d * d);
    printf("Surface Area: %.2lf\n", 6 * d * d);

Return code 0 for everything OK.

    return 0;
}