204. Union

Question.3

A developer sends a float over UART as raw bytes:

union FloatConverter {
   float f;
    uint8_t b[4];
};

void send_temp(float temp) {
    FloatConverter u;
    u.f = temp;
    uart_transmit(u.b, 4);  // Send 4 bytes
}

What technique does this demonstrate?

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Float-to-int conversion
Type punning via union -- writing a float and reading its raw byte representation for transmission, without pointer casting or bit shifting
Data compression
Endianness conversion

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