main.c(69): error C267: 'ReadMAX6675': requires ANSI-style prototype

This error message indicates that the function "ReadMAX6675" has been called without a prototype declaration in ANSI style. ANSI style prototype declaration requires that the function name is followed by the parameter list in parentheses, with each parameter separated by a comma and declared with its data type.

To resolve this error, you need to provide a prototype declaration for the "ReadMAX6675" function using ANSI style. This can be done by adding the following line at the beginning of your code, before the main function:

int ReadMAX6675(int);

Note that this assumes that the "ReadMAX6675" function takes an integer parameter. If it takes a different type of parameter, you should update the prototype declaration accordingly.

Alternatively, you can define the function before the main function, which will also provide a prototype declaration. For example:

int ReadMAX6675(int value)
{
    // function body
}

Again, make sure that you provide the correct parameter type and name for the function.