#include<stdio.h>
#include<stdlib.h>
void find_num(int a[],int n){
int i, j,tmp = 0;
for (i = 0; i < n-1; i++){
for (j = 0; j < n - i - 1; j++){
if (a[j] > a[j + 1]){
tmp = a[j];
a[j] = a[j + 1];
a[j + 1] = tmp;
}
}
}
for (int x = 0; x < n; x+=2){
if (a[x] == a[x + 1]){
continue;
}
else if(a[x] != a[x+1]){
printf("%d\n", a[x]);
x++; //和下一個相比較
}
}
}
int main(){
int a[] = { 1, 1, 2, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8 };
int len = sizeof(a)/sizeof(a[0]);
find_num(a, len);
system(“pause”);
return 0;
}