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

    int a = 5;
    int c = 6;
    int d = 4;
    int e = 5;

    Serial.println("1) a < d: " + String(a < d));
    Serial.println("2) c >= a: " + String(c >= a));
    Serial.println("3) d > a: " + String(d > a));
    Serial.println("4) a <= d: " + String(a <= d));
    Serial.println("5) a == c: " + String(a == c));
    Serial.println("6) c == d: " + String(c == d));
    Serial.println("7) a < d && c >= a: " + String(a < d && c >= a));
    Serial.println("8) a <= d && e == a: " + String(a <= d && e == a));
    Serial.println("9) a == c || c >= e: " + String(a == c || c >= e));
    Serial.println("10) e == a || d > a: " + String(e == a || d > a));
}

void loop() {
     // Empty loop
}