i=i++；

    public static void main(String[] args) {
        int count=0;
        for (int i = 0; i < 10; i++) {
            count=count++;
        }
        System.out.println(count);
    }

count = count++   The principle is  temp = count; count = count+1 ; count = temp;    therefore count Always be 0 This is limited to java And c It's different