IHYPRESS PROGRAMMING

Tutorials and C programs with code and output for beginners

<10.02>

/* Using functions with structures */ #include <stdio.h> #include <string.h> typedef struct { char name [20]; double diameter; int moons; double orbit; double spin; } planets_t; /* structure sent to function */ void print_planet (planets_t p) { printf ("------------------------------------------------------\n"); printf ("%s\n", p.name); printf ("Diameter: %.1f km\n", p.diameter); printf ("Number of moons: %d\n", p.moons); printf ("Time to complete one orbit around the sun: %.1f years\n", p.orbit); printf ("Time to complete one rotation on the axis: %.1f hours\n", p.spin); printf ("------------------------------------------------------\n\n"); } /* structure returned by value */ planets_t get_planet (void) { planets_t pl; printf ("Enter the planet's name: "); scanf ("%s", pl.name); printf ("Enter the planet's diameter in km: "); scanf ("%lf", &pl.diameter); printf ("How many moons orbit this planet? "); scanf ("%d", &pl.moons); printf ("How many years does it take for this planet to orbit the sun? "); scanf ("%lf", &pl.orbit); printf ("How many hours for one rotation around the axis? "); scanf ("%lf", &pl.spin); return (pl); } int main (void) { planets_t planet, planets[10]; /* filling planet variable */ planet = get_planet (); /* filling cell 2 of planets array */ planets[2] = get_planet (); /* displaying record of planet 2 */ print_planet (planets[2]); /* displaying record of planet variable */ print_planet (planet); /* copying planet variable into planet 0 */ planets[0] = planet; /* displaying record of planet 0 */ print_planet (planets[0]); return(0); }

Enter the planet's name: Earth Enter the planet's diameter in km: 12000 How many moons orbit this planet? 1 How many years does it take for this planet to orbit the sun? 1 How many hours for one rotation around the axis? 24 Enter the planet's name: Saturn Enter the planet's diameter in km: 120000 How many moons orbit this planet? 23 How many years does it take for this planet to orbit the sun? 29.7 How many hours for one rotation around the axis? 10.5 ------------------------------------------------------ Saturn Diameter: 120000.0 km Number of moons: 23 Time to complete one orbit around the sun: 29.7 years Time to complete one rotation on the axis: 10.5 hours ------------------------------------------------------ ------------------------------------------------------ Earth Diameter: 12000.0 km Number of moons: 1 Time to complete one orbit around the sun: 1.0 years Time to complete one rotation on the axis: 24.0 hours ------------------------------------------------------ ------------------------------------------------------ Earth Diameter: 12000.0 km Number of moons: 1 Time to complete one orbit around the sun: 1.0 years Time to complete one rotation on the axis: 24.0 hours ------------------------------------------------------