buble sort in c that ask user input
#include <stdio.h>
#include <stdlib.h>
typedef enum _order {
Ascending=1, Descending
} order;
void swap(int *x, int *y){
int wk;
wk=*x;*x=*y;*y=wk;
}
int needSwap(int x, int y, order dir){
if(dir == Ascending)
return x > y;
if(dir == Descending)
return x < y;
return 0;
}
void bubbleSort(int *array, int top, int end, order dir){
int i, j, swaped;
for(i = top; i < end; ++i){
swaped = 0;
for(j = top + 1; j <= end - i; ++j)
if(needSwap(array[j-1], array[j], dir)){
swap(&array[j-1], &array[j]);
swaped = 1;
}
if(swaped == 0)break;
}
}
int main(){
int myarray[100], index, order;
index=0;
printf("Enter your numbers. Write -1 to stop. \n");
do{
scanf("%d", &myarray[index++]);
}while(myarray[index-1] != -1 && index < 100);
--index;//Correction to point to the final value
printf("Enter 1 if you want them to be in ascending order.\n"
"Enter 2 if you want descending order\n");
scanf("%d",&order);
bubbleSort(myarray, 0, index-1, order);
{//result print
int i;
for(i=0;i<index;++i)
printf("%d ", myarray[i]);
printf("\n");
}
system("PAUSE");
return 0;
}