Huitong programming introductory course - 2A breakthrough

The content after the double slash in the following code is teacher Liu's comment , No need for students to input

Forward 100

int main() {
    
	//pen： paint brush 
	//fd: Forward 
	//pen.fd(100)： Brush forward 100 Step  
	pen.fd(100);

	return 0;
}

Lateral advance 100

int main() {
    
	//rt： Turn right  
	//pen.rt(90)： Turn the brush right 90 degree  
	pen.rt(90);
	
	pen.fd(100);

	return 0;
}

draw 7 word

int main() {
    
	pen.fd(200);
	
	//lt： Turn left  
	//pen.lt(90)： Brush left 90 degree  
	pen.lt(90);
	
	pen.fd(100); 

	return 0;
}

draw U shape

int main() {
    
	pen.fd(200);
	
	//pen.rt(90).fd(150)： Turn the brush right 90 degree , Forward 150 Step  
	pen.rt(90).fd(150);
	
	//hide： hide 
	//pen.rt(90).fd(200).hide();  Turn the brush right 90 degree , Forward 200 Step , hide  
	pen.rt(90).fd(200).hide(); 

	return 0;
}

draw T shape

int main() {
    
	pen.fd(200).rt(90);

	//bk： back off 
	//pen.fd(100).bk(200)： Brush forward 100, back off 200
	pen.fd(100).bk(200);
	
	pen.hide();
	
	return 0;
}

Draw a cross

int main() {
    
	//pen.fd(100).bk(200)： Brush forward 100 Step , back off 200 Step  
	pen.fd(100).bk(200);
	
	//pen.fd(100).rt(90)： Brush forward 100 Step , Turn right 90 degree  
	pen.fd(100).rt(90);
	
	pen.fd(100).bk(200);
	
	return 0;
}