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You are here: Home / Replies / WARNING 206: MISSING FUNCTION

WARNING 206: MISSING FUNCTION

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Microcontroller › 8051 › CHECK OUT MY C PROGRAM ON LCD AS THERE IS LITTLE MISTAKE › WARNING 206: MISSING FUNCTION

April 12, 2011 at 3:29 pm #5949
romel emperado
Participant
WARNING 206: MISSING FUNCTION PROTOTYPE

ANSWER

The called function is unknown because no prototype declaration exists. Calls to unknown functions risk that the number of parameters may not correspond to the actual requirements. If this is the case, the function is called incorrectly.

The compiler has no way to check for missing or excessive parameters and their types. Include prototypes of the functions used in your program. Prototypes must be specified before the functions are actually called. The definition of a function automatically produces a prototype.

 

 

 

Error C267: 'function': requires ANSI-style prototype

What does this message mean?

ANSWER

This error message indicates that the function you are defining was prototyped with an empty parameter list but the definition includes parameters. Your function prototypes must match your function definitions. Find the prototype and either remove it or update it so that its arguments match that of the definition and everything will work OK.

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