Skill 计算两点距离

https://www.cnblogs.com/yeungchie/

• code

procedure(ycHowFar(a b)
	prog((xAB yAB sAB)
		xAB = xCoord(a) - xCoord(b)
		yAB = yCoord(a) - yCoord(b)
		sAB = sqrt(xAB ** 2 + yAB ** 2)
		return(sAB)
	)
)

• example

ycHowFar(0:0 1:1)
=>1.414214