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struct SStudent
{
    char name[ 13 ];                   // ÐÕÃû
    char className[ 16 ];           // °à¼¶Ãû
    char age;                              // ÄêÁä
    ....
};
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    struct SStudent student;
    student.age = 22;
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    SStudent student;
    student.age = 22;
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