请教一道C语言概念题 请详解.若有说明:long *p,a;则不能通过scanf语句正确给输入项读入数据的程序段是A) *p=&a; scanf("%ld",p);B) p=(long *)malloc(8); scanf("%ld",p);C) scanf("%ld",p=&a);D) scanf("%ld",&a)
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![请教一道C语言概念题 请详解.若有说明:long *p,a;则不能通过scanf语句正确给输入项读入数据的程序段是A) *p=&a; scanf(](/uploads/image/z/8544691-19-1.jpg?t=%E8%AF%B7%E6%95%99%E4%B8%80%E9%81%93C%E8%AF%AD%E8%A8%80%E6%A6%82%E5%BF%B5%E9%A2%98+%E8%AF%B7%E8%AF%A6%E8%A7%A3.%E8%8B%A5%E6%9C%89%E8%AF%B4%E6%98%8E%EF%BC%9Along+%2Ap%2Ca%3B%E5%88%99%E4%B8%8D%E8%83%BD%E9%80%9A%E8%BF%87scanf%E8%AF%AD%E5%8F%A5%E6%AD%A3%E7%A1%AE%E7%BB%99%E8%BE%93%E5%85%A5%E9%A1%B9%E8%AF%BB%E5%85%A5%E6%95%B0%E6%8D%AE%E7%9A%84%E7%A8%8B%E5%BA%8F%E6%AE%B5%E6%98%AFA%29+%2Ap%3D%26a%EF%BC%9B+scanf%28%22%25ld%22%2Cp%29%EF%BC%9BB%29+p%3D%28long+%2A%29malloc%288%29%EF%BC%9B+scanf%28%22%25ld%22%2Cp%29%EF%BC%9BC%29+scanf%28%22%25ld%22%2Cp%3D%26a%29%EF%BC%9BD%29+scanf%28%22%25ld%22%2C%26a%29)
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