Failure to specify function prototypes results in a function being implicitly defined. Without a function prototype, the compiler must estimate will assume the the correct number of parameters have been supplied to a function. Calling a function with a different number of arguments then that function expects results in unintended program behavior.
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Most compilers will issue a warning when a function is implicitly defined. Although, these warnings should be resolved before proceeding \[MSC00-CA\], they will not prevent the program from compiling. |
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