Multi-Adder Test Script

int pinA1 = 2;
int pinA2 = 6;
int pinB1 = 4;
int pinB2 = 7;
int pinS1 = 5;
int pinS2 = 8;
int pinC = 12;
int pinT = 13;

int bitS1 = 0;
int bitS2 = 0;
int bitC = 0;
int bitT = 0;

void setup(){
    Serial.begin(9600);
    Serial.println("Output is:");


    pinMode (pinA1, OUTPUT);
        pinMode (pinA2, OUTPUT);
    pinMode (pinB1, OUTPUT);
        pinMode (pinB2, OUTPUT);
    pinMode (pinS1, INPUT );
        pinMode (pinS2, INPUT );
    pinMode (pinC,  INPUT );
    pinMode (pinT,  INPUT );

    /* Create input for half adder */
    digitalWrite(pinA1, HIGH); //-1
        digitalWrite(pinA2, HIGH); //0-
    digitalWrite(pinB1, HIGH);  //-1
        digitalWrite(pinB2, HIGH);  //0-
}

void loop(){
    /* Verify the output of the adder */
    bitS1 = digitalRead(pinS1);
        bitS2 = digitalRead(pinS2);
    bitC = digitalRead(pinC);
    bitT = digitalRead(pinT);

    if (bitS1 == HIGH)
        Serial.print("S1 = 1  ");
    else
        Serial.print("S1 = 0  ");

        if (bitS2 == HIGH)
        Serial.print("S2 = 1  ");
    else
        Serial.print("S2 = 0  ");


    if (bitC == HIGH)
        Serial.println("C = 1");
    else
        Serial.println("C = 0");

    if (bitT == HIGH)
        Serial.println("T = 1");
    else
        Serial.println("T = 0");

    delay (1000);
}