义 unsigned char *pImage;报错错误： expected expression before ‘unsigned’

在c++中可以这么定义：

unsigned char *pImage；
pImage = new unsigned char[100];

C应该怎么写，我按照以下方式，报错
unsigned char *pImage;
  pImage = unsigned char[10];

错误： expected expression before ‘unsigned’

nsigned char *pImage；
pImage = new unsigned char[100];

C应该怎么写，我按照以下方式，报错
unsigned char *pImage;
  pImage = unsigned char[10];
错误： expected expression before ‘unsigned’

在c++中可以这么定义：

unsigned char *pImage；
pImage = new unsigned char[100];

C应该怎么写，我按照以下方式，报错
unsigned char *pImage;
  pImage = unsigned char[10];
错误： expected expression before ‘unsigned’

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