Summarize the shortcomings of the setjmp and longjmp library routines of C. What is a volatile variable in C? Under what circumstances is it useful? What was the first high-level programming language...

Summarize the shortcomings of the setjmp and longjmp library routines of C. What is a volatile variable in C? Under what circumstances is it useful? What was the first high-level programming language to provide coroutines? What is the difference between a coroutine and a thread?