about font-lock

[Atsushi Shinmura]

Does anyone know how to paint C/C++ source code by the 
"font-lock" in this case?

For example,

void func(int samples){
int count, //loop counter
    var1,  //I want this is painted.
    var2;  //This too.
.............................................
    return;
}

the "int count" is painted. But the "var1" and "var2" are not 
painted.

Would you mind showing me how to solve this problem?

-- Atsushi Shinmura