VoltageRead.ino

#define READ_COUNT 5

float volts[READ_COUNT];

void setup()
{
    Serial.begin(9600);
}

void loop()
{
    for (int i = 0; i < READ_COUNT; i++) {
        volts[i] = analogRead(i) / 1024.0 * 5.0;
    }
    Serial.print("V ");
    for (int i = 0; i < READ_COUNT; i++) {
        Serial.print(volts[i]);
        if ((i + 1) != READ_COUNT)
            Serial.print(":");
    }
    Serial.println();
}