The reason being is that it says that my program is right
Code:#include <string.h> #include <stdio.h> #include <stdlib.h> #define NFlights 10 struct date { int month; int day; int year; int hour; int minute; int meridian; }; struct flight { long int flight_number; char* airline; char* departure_city; char* arrival_city; struct date departure_time; struct date arrival_time; }my_flight[NFlights]; int lessThan(struct flight F1 , struct flight F2) { struct date A = F1.departure_time; struct date B = F2.departure_time; struct date C = F1.departure_time; struct date D = F2.departure_time; if (A.year < B.year) return 1; else if (A.year == B.year && A.month < B.month) return 1; else if (A.year == B.year && A.month == B.month && A.day < B.day) return 1; else if (A.year == B.year && A.month == B.month && A.day == B.day && C.meridian < D.meridian) return 1; else if (A.year == B.year && A.month == B.month && A.day == B.day && C.meridian == D.meridian && C.hour < D.hour) return 1; else if (A.year == B.year && A.month == B.month && A.day == B.day && C.meridian == D.meridian && C.hour == D.hour && C.minute < D.minute) return 1; else return 0; } int sort(struct flight *my_flight) { int i, j; struct flight x; for (i = 0; i < 5; i++){ for (j = 0; j < 5; j++){ if (lessThan(my_flight[i], my_flight[j])){ x = my_flight[j]; my_flight[j] = my_flight[i]; my_flight[i] = x; } } } return 0; } int main() { struct flight my_flight[NFlights]; int i; my_flight[ 0 ].flight_number = 100; my_flight[ 0 ].airline= "American"; my_flight[ 0 ].arrival_city = "Boston"; my_flight[ 0 ].departure_city = "Seattle"; my_flight[ 0 ].departure_time.month = 05; my_flight[ 0 ].departure_time.day = 12; my_flight[ 0 ].departure_time.year=2014; my_flight[ 0 ].departure_time.hour=10; my_flight[ 0 ].departure_time.minute=30; my_flight[ 0 ].departure_time.meridian= 0; my_flight[ 0 ].arrival_time.month = 05; my_flight[ 0 ].arrival_time.day = 12; my_flight[ 0 ].arrival_time.year=2014; my_flight[ 0 ].arrival_time.hour=12; my_flight[ 0 ].arrival_time.minute=30; my_flight[ 0 ].arrival_time.meridian= 1; my_flight[ 1 ].flight_number = 200; my_flight[ 1 ].airline= "United"; my_flight[ 1 ].arrival_city = "El Paso"; my_flight[ 1 ].departure_city = "Chicago"; my_flight[ 1 ].departure_time.month = 06; my_flight[ 1 ].departure_time.day = 13; my_flight[ 1 ].departure_time.year=2014; my_flight[ 1 ].departure_time.hour=6; my_flight[ 1 ].departure_time.minute=30; my_flight[ 1 ].departure_time.meridian= 0; my_flight[ 1 ].arrival_time.month = 06; my_flight[ 1 ].arrival_time.day = 13; my_flight[ 1 ].arrival_time.year=2014; my_flight[ 1 ].arrival_time.hour=8; my_flight[ 1 ].arrival_time.minute=30; my_flight[ 1 ].arrival_time.meridian= 0; my_flight[ 2 ].flight_number = 300; my_flight[ 2 ].airline= "Emirates"; my_flight[ 2 ].arrival_city = "Barcelona"; my_flight[ 2 ].departure_city = "Madrid"; my_flight[ 2 ].departure_time.month = 01; my_flight[ 2 ].departure_time.day = 01; my_flight[ 2 ].departure_time.year=2014; my_flight[ 2 ].departure_time.hour=10; my_flight[ 2 ].departure_time.minute=30; my_flight[ 2 ].departure_time.meridian= 0; my_flight[ 2 ].arrival_time.month = 01; my_flight[ 2 ].arrival_time.day = 01; my_flight[ 2 ].arrival_time.year=2014; my_flight[ 2 ].arrival_time.hour=12; my_flight[ 2 ].arrival_time.minute=30; my_flight[ 2 ].arrival_time.meridian= 1; my_flight[ 3 ].flight_number = 400; my_flight[ 3 ].airline= "Southwest"; my_flight[ 3 ].arrival_city = "Los Angeles"; my_flight[ 3 ].departure_city = "Sacramento"; my_flight[ 3 ].departure_time.month = 10; my_flight[ 3 ].departure_time.day = 21; my_flight[ 3 ].departure_time.year=2014; my_flight[ 3 ].departure_time.hour= 9; my_flight[ 3 ].departure_time.minute=30; my_flight[ 3 ].departure_time.meridian= 0; my_flight[ 3 ].arrival_time.month = 10; my_flight[ 3 ].arrival_time.day = 21; my_flight[ 3 ].arrival_time.year=2014; my_flight[ 3 ].arrival_time.hour=11; my_flight[ 3 ].arrival_time.minute=30; my_flight[ 3 ].arrival_time.meridian= 0; my_flight[ 4 ].flight_number = 500; my_flight[ 4 ].airline= "Emirates"; my_flight[ 4 ].arrival_city = "London"; my_flight[ 4 ].departure_city = "Paris"; my_flight[ 4 ].departure_time.month = 02; my_flight[ 4 ].departure_time.day = 13; my_flight[ 4 ].departure_time.year=2014; my_flight[ 4 ].departure_time.hour=10; my_flight[ 4 ].departure_time.minute=30; my_flight[ 4 ].departure_time.meridian= 0; my_flight[ 4 ].arrival_time.month = 02; my_flight[ 4 ].arrival_time.day = 13; my_flight[ 4 ].arrival_time.year=2014; my_flight[ 4 ].arrival_time.hour=5; my_flight[ 4 ].arrival_time.minute=30; my_flight[ 4 ].arrival_time.meridian= 1; my_flight[ 5 ].flight_number = 600; my_flight[ 5 ].airline= "American"; my_flight[ 5 ].arrival_city = "Chicago"; my_flight[ 5 ].departure_city = "Los Angeles"; my_flight[ 5 ].departure_time.month = 03; my_flight[ 5 ].departure_time.day = 12; my_flight[ 5 ].departure_time.year=2014; my_flight[ 5 ].departure_time.hour=8; my_flight[ 5 ].departure_time.minute=30; my_flight[ 5 ].departure_time.meridian= 0; my_flight[ 5 ].arrival_time.month = 03; my_flight[ 5 ].arrival_time.day = 12; my_flight[ 5 ].arrival_time.year=2014; my_flight[ 5 ].arrival_time.hour=01; my_flight[ 5 ].arrival_time.minute=30; my_flight[ 5 ].arrival_time.meridian= 1; my_flight[ 6 ].flight_number = 700; my_flight[ 6 ].airline= "United"; my_flight[ 6 ].arrival_city = "Albuquerque"; my_flight[ 6 ].departure_city = "Oakland"; my_flight[ 6 ].departure_time.month = 9; my_flight[ 6 ].departure_time.day = 20; my_flight[ 6 ].departure_time.year=2014; my_flight[ 6 ].departure_time.hour=03; my_flight[ 6 ].departure_time.minute=00; my_flight[ 6 ].departure_time.meridian= 1; my_flight[ 6 ].arrival_time.month = 9; my_flight[ 6 ].arrival_time.day = 20; my_flight[ 6 ].arrival_time.year=2014; my_flight[ 6 ].arrival_time.hour=07; my_flight[ 6 ].arrival_time.minute=30; my_flight[ 6 ].arrival_time.meridian= 1; my_flight[ 7 ].flight_number = 800; my_flight[ 7 ].airline= "American"; my_flight[ 7 ].arrival_city = "Houston"; my_flight[ 7 ].departure_city = "Austin"; my_flight[ 7 ].departure_time.month = 04; my_flight[ 7 ].departure_time.day = 28; my_flight[ 7 ].departure_time.year=2015; my_flight[ 7 ].departure_time.hour=01; my_flight[ 7 ].departure_time.minute=00; my_flight[ 7 ].departure_time.meridian= 1; my_flight[ 7 ].arrival_time.month = 04; my_flight[ 7 ].arrival_time.day = 28; my_flight[ 7 ].arrival_time.year=2015; my_flight[ 7 ].arrival_time.hour=02; my_flight[ 7 ].arrival_time.minute=30; my_flight[ 7 ].arrival_time.meridian= 1; my_flight[ 8 ].flight_number = 900; my_flight[ 8 ].airline= "Southwest"; my_flight[ 8 ].arrival_city = "El Paso"; my_flight[ 8 ].departure_city = "Chicago"; my_flight[ 8 ].departure_time.month = 9; my_flight[ 8 ].departure_time.day = 28; my_flight[ 8 ].departure_time.year=2014; my_flight[ 8 ].departure_time.hour=06; my_flight[ 8 ].departure_time.minute=30; my_flight[ 8 ].departure_time.meridian= 0; my_flight[ 8 ].arrival_time.month = 9; my_flight[ 8 ].arrival_time.day = 28; my_flight[ 8 ].arrival_time.year=2014; my_flight[ 8 ].arrival_time.hour=9; my_flight[ 8 ].arrival_time.minute=30; my_flight[ 8 ].arrival_time.meridian= 0; my_flight[ 9 ].flight_number = 1000; my_flight[ 9 ].airline= "American"; my_flight[ 9 ].arrival_city = "Guadalajara"; my_flight[ 9 ].departure_city = "Cancun"; my_flight[ 9 ].departure_time.month = 12; my_flight[ 9 ].departure_time.day = 22; my_flight[ 9 ].departure_time.year=2015; my_flight[ 9 ].departure_time.hour=10; my_flight[ 9 ].departure_time.minute=30; my_flight[ 9 ].departure_time.meridian= 0; my_flight[ 9 ].arrival_time.month = 12; my_flight[ 9 ].arrival_time.day = 22; my_flight[ 9 ].arrival_time.year=2015; my_flight[ 9 ].arrival_time.hour=02; my_flight[ 9 ].arrival_time.minute=30; my_flight[ 9 ].arrival_time.meridian= 1; printf("These are the flights before ordering:\n"); for( i = 0; i < NFlights; i++ ) { printf( "Flight[%d]: %ld %s %s %s %d %d %d %d %d %d %d %d %d %d %d %d \n",i, my_flight[ i ].flight_number, my_flight[ i ].airline, my_flight[ i ].arrival_city, my_flight[ i ].departure_city, my_flight[ i ].departure_time.month, my_flight[ i ].departure_time.day, my_flight[ i ].departure_time.year, my_flight[ i ].departure_time.hour, my_flight[ i ].departure_time.minute, my_flight[ i ].departure_time.meridian, my_flight[ i ].arrival_time.month, my_flight[ i ].arrival_time.day, my_flight[ i ].arrival_time.year, my_flight[ i ].arrival_time.hour, my_flight[ i ].arrival_time.minute, my_flight[ i ].arrival_time.meridian); } sort( my_flight); printf("\nThe Flights after ordering :\n"); for( i = 0; i < NFlights; i++ ) { printf( "Flight[%d]: %ld %s %s %s %d %d %d %d %d %d %d %d %d %d %d %d \n",i, my_flight[ i ].flight_number, my_flight[ i ].airline, my_flight[ i ].arrival_city, my_flight[ i ].departure_city, my_flight[ i ].departure_time.month, my_flight[ i ].departure_time.day, my_flight[ i ].departure_time.year, my_flight[ i ].departure_time.hour, my_flight[ i ].departure_time.minute, my_flight[ i ].departure_time.meridian, my_flight[ i ].arrival_time.month, my_flight[ i ].arrival_time.day, my_flight[ i ].arrival_time.year, my_flight[ i ].arrival_time.hour, my_flight[ i ].arrival_time.minute, my_flight[ i ].arrival_time.meridian); } return 0; }
Originally Posted by stahta01
