再问C++转C的问题

[liqian99]

C++语句如下:
unsigned char ** buffer;

buffer = new unsigned char * [height];
buffer[0] = new unsigned char[height * width];

上述两个转成纯C应怎样写,有点不太清楚其区别,哪位在虾帮忙指点一下.
昨天的给的还是不行.
unsigned char ** buffer;

buffer = ( unsigend char **)malloc(sizeof(unsigend char*) * height );
buffer[0] = ( unsigend char *)malloc(sizeof(unsigend char) * height * width );

上述能编译过,但应用起来取值不对.

[intuition444]

unsigned char ** buffer;

buffer = ( unsigend char **)malloc(sizeof(unsigend char*) * height );
*buffer[0] = ( unsigend char *)malloc(sizeof(unsigend char) * height * width );

[liqian99]

楼上的也不对

[iambic]

给出你的测试代码。提问前应该确认你给出的C++代码是正确的。