求子串位置函数.STORE"This is Visual FoxPro“TO x AT（“fox”,x）,AT（“is”

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求子串位置函数.STORE"This is Visual FoxPro“TO x AT（“fox”,x）,AT（“is”,x,

AT（“fox”,x）=0
求fox在x中出现的位置,在x这个字符串中,没有"fox",只有"Fox",注意大小写要区分,所以为0
AT（“is”,x,3）=10
求“is”在x中第3次出现的位置,所以为10

求子串位置函数.STORE"This is Visual FoxPro“TO x AT（“fox”,x）,AT（“is” 英语翻译A flying fox is not a fox at all.It is a bat.But this ba A fiying fox is not a fox at The department store is reported to（）at midnight last night At what time is the store( 英语翻译The flying fox is not a fox at all.It is an extra large 单词拼写The flying fox is not a fox at all. It is an extra large 英语22222222The flying fox is not a fox at all.It is an extra visual foxpro Meo is going to fill us in on what is in store for us at thi this is picture of my father and mother at a store .they lik JACK is going to fill us in on what's in store for us at thi