print

letx =1, y =2, z =3

print(x,y,z)

//separator设置分割符，默认是" "

print(x,y,z, separator:"--")        //1--2--3

//terminator结束符，默认为回车

print(x,y,z, separator:"--", terminator:":)")        //1--2--3:)

//字符串插值

print(y,"*",z,"=",y*z)            //2 * 3 = 6

print("\(y) *\(z) =\(y*z)")            //2 * 3 = 6

Swift 变量名、print的基本用法 - CSDN博客