/*
roco "Hello world!" with yielding
*/

/*define all the coroutines*/
co H{cout 72 yi ro}
co e{cout 101 yi ro}
co l{cout 108 yi ro}
co o{cout 111 yi ro}
co spc{cout 32 yi ro}
co w{cout 119 yi ro}
co r{cout 114 yi ro}
co d{cout 100 yi ro}
co excl{cout 33 yi ro}

/*yield the coroutines to form "Hello World!"*/
yi H
yi e
yi l
yi l
yi o
yi spc
yi w
yi o
yi r
yi l
yi d
yi excl

/*ac at the end, or the program will loop forever*/
ac