strstr查找字符串, strch查找字符 (在字符串中) [Microsoft Corporation]
/***
*char*strchr(string,c)-searchastringforacharacter
*
*Purpose:
*Searchesastringforagivencharacter,whichmaybethe
*nullcharacter'\0'.
*
*Entry:
*char*string-stringtosearchin
*charc-charactertosearch