progtest13:2.c

/*
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


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

int porovnej (const void * a, const void * b)
{
    return ( *(int*)a - *(int*)b );
}


int main (void)
{
    int * numbers, newnum = 0, stopnum, ind;
    ssize_t size, cnt = 0, j=0;
    
    if((scanf("%ld%d", &size, &stopnum) != 2) || (size <= 0)){
        printf("Invalid input.\n");
        return EXIT_FAILURE;
    }
    numbers = (int *)malloc(size*sizeof(int));
    printf("Array size is: %ld\n",size);
    
    do{
        if((ind = scanf("%d", &newnum)) == 0){
            printf("Invalid input.\n");
            free(numbers);
            return EXIT_FAILURE;
        }
        if(ind == EOF){
            newnum = stopnum;
        }
        else{
            cnt++;
            if(cnt > size){
                size += size;
                numbers = (int *)realloc(numbers, size*sizeof(int));
                printf("New array size is: %ld\n", size);
            }
            numbers[cnt-1]=newnum;
        }
    }while(newnum != stopnum);
    
    qsort (numbers, cnt, sizeof(int), porovnej);
    
    for(ssize_t i = cnt; i>0; i--){
        printf("[%ld]: %d\n", j, numbers[i-1]);
        j++;
    }
    
    free(numbers);
    return EXIT_SUCCESS;
}