有以下字符串数组,分别表示出库单号,代理商号,类型,数量
struct DELIVERY_S
{
char delivery_id[33]; // 出库单号
char kunnr[11]; // 代理商编号
char matrn[19]; // 轮胎编号
int total_count; // 总数量};
typedef DELIVERY_S DELIVERY;
DELIVERY delivery[] =
{
{"CK001","DL001","XH001",10},
{"CK002","DL002","XH002",20},
{"CK001","DL003","XH003",30},
{"CK005","DL005","XH005",50}
};
现在要求,把出库单号取出来,要求不能重复。最后得到的结果是CK001,CK002,CK005
有什么好的办法来实现吗?