14. Function Overloading

Question.5

A developer writes three send() overloads, each containing identical 50-line formatting logic followed by a type-specific UART write at the end:

void send(int val)    { /* 50 lines */ uart_write_int(val); }
void send(float val)  { /* same 50 lines */ uart_write_float(val); }
void send(double val) { /* same 50 lines */ uart_write_double(val); }

What is the firmware cost of this approach?

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No extra cost — the compiler merges identical code
3× the Flash usage for the shared logic — each overload is a separate function with its own copy of the 50 lines
Only the type-specific line is duplicated
Overloads share code automatically through name mangling

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