uint8_t *预计a;

Question

VS10 is underlining uint8_t, saying that it expected a semi-colon.

Here's my code snippet:-

uint8_t* pixelPtr = (uint8_t*)image.data; //this line shows the error (expected a ;)

Yet, when I use it lower down my code, no errors are attached to it:-

typedef Scalar_<uint8_t> bgrPixel; //this line is error free

Answer 1

Did you forget a ; on a previous class or struct declaration? If so, then it's interpreting uint8_t as a variable name that is an instance of that struct or class .

For example, if you did this:

class clown
{
    // yadda
    // yadda
    ... 
} // notice no semicolon here

uint8_t *pixelPtr = (uint8_t*)image.data;

The compiler effectively sees:

class clown
{
    // yadda
    // yadda
    ... 
} uint8_t *pixelPtr = (uint8_t*)image.data;

and naturally wants a semicolon after uint8_t , so it looks more like this:

class clown
{
    // yadda
    // yadda
    ... 
} uint8_t; // which would declare an instance of class clown named uint8_t