请问一下，我这行代码写的不对吗？得不到我想要的日期输出。#include<stdio.h>int main(){ int a,mm,dd,yyyy; float b; printf("ENTer iten nhmber:", a); scanf("%d",&a); printf("Enter unit price:", b); scanf("%f",&b); printf("Enter purchase date(mm/dd/yyyy):\n",mm,dd,yyyy); scanf("%d%d%d",&mm,&dd,&yyyy); printf("ltem\tunit\tpurchase\n"); printf("\tprice\tDate\n"); printf("%d\t$ %0.2f\t %d%d%d\n",a,b,mm,dd,yyyy); return 0;}