Ambiguous vs unambiguous grammar?

The instruction ishl (shift left integer) exists in jvm but not in ijvm. it uses the top two values on the stack, replacing the two with a single value, the result. the sec- ond-from-top word of the stack is the operand to be shifted. its content is shifted left by a value between 0 and 31, inclusive, depending on the value of the 5 least signifi- cant bits of the top word on the stack (the other 27 bits of the top word are ignored). zeros are shifted in from the right for as many bits as the shift count. the opcode for ishl is 120 (0x78).a. what is the arithmetic operation equivalent to shifting left with a count of 2? b. extend the microcode to include this instruction as a part of ijv.

Which of the following has not been attributed at least in part to social media a. drug addiction b. depression c. kidnapping d. murder

Write multiple if statements: if caryear is before 1968, print "probably has few safety features." (without quotes). if after 1971, print "probably has seat belts.". if after 1991, print "probably has anti-lock brakes.". if after 2002, print "probably has airbags.". end each phrase with period and newline. ex: caryear = 1995 prints: