Define a struct type, using typedef,
for a color in computer graphics.
Colors are a triple of red, green, and blue
light intensities.
Each intensity may be from 0 to 255.
(But the struct definition itself can't check ranges.)
Write a function that sets the color values and another function to print a color.
/* declare the Color type */
/* function to print a Color */
void printColor( Color *c ) {...}
/* function to construct a Color */
void setColor( Color *c, int r, int g, int b ) {...}
int main()
{
/* declare and initialize two Colors */
Color grass, sky;
setColor( &grass, 50, 200, 100 );
setColor( &sky, 100, 100, 250 );
/* print values */
printColor( &grass );
printColor( &sky );
return 0;
}