Exam2

int led1 = 2;
int led2 = 3;
int sw1 = 7;
int sw2 = 8;
int time = 100;
int count = 0;
int s = LOW;
int a;
int old = HIGH;
void setup() {
// put your setup code here, to run once:
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
pinMode(sw7,INPUT);
pinMode(sw8,INPUT);
}

void loop() {
// put your main code here, to run repeatedly:
if(digitalRead(sw1)==LOW && digitalRead(sw2)==HIGH ){
for(int i = 1;i <= 3;i++){
digitalWrite(led1,!s);
delay(time);
digitalWrite(led1,LOW);
digitalWrite(led2,!s);
delay(time);
digitalWrite(led2,LOW);

if(digitalRead(sw2)==LOW && digitalRead(sw1)==HIGH){
time = time + 100;
}
i = 1; 
}
}
}