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