Consider the following context free grammar for an arithmetic expression contain- ing operation - only -> number -> - number €

(a) The following is an attribute grammar to define the value of any arithmetic expres- sion specified by the grammar above.

-> number D. value := .value > .st := number. value -> - number > 2.st := 1.st - number. value > 1.value : = 2.value -> > .value := .st Draw a decorated parse tree for 1-2-3-4 using the attribute grammar.

(b) Instead of the value of an arithmetic expression, we would like to know the number of "numbers" in an arithmetic expression. For example, in 1-2-3-4, we have four numbers. Write an attribute grammar to define the number of "numbers" of any arithmetic expression following the grammar in part a).

What is a distinguishing feature of today’s graphic application software?) graphic applications are used today on a variety of devices, including touch-screen kiosks and mobile phones.

Fill in the following program so that it will correctly calculate the price of the orange juice the user is buying based on the buy one get one sale.#include //main functionint main() { int cartons; float price, total; //prompt user for input information printf("what is the cost of one container of oj in dollars? \n"); scanf(" [ select ] ["%d", "%c", "%f", "%lf"] ", & price); printf("how many containers are you buying? \n"); scanf(" [ select ] ["%d", "%c", "%f", "%lf"] ", & cartons); if ( [ select ] ["cartons / 2", "cartons % 1", "cartons % 2", "cartons % price", "cartons / price", "cartons / total"] [ select ] ["=", "==", "! =", "< =", "> =", "< "] 0) total = [ select ] ["price * cartons", "cartons * price / 2 + price", "(cartons / 2) * price", "cartons / (2.0 * price)", "(cartons / 2.0) * price + price", "((cartons / 2) * price) + price"] ; else total = ((cartons / 2) * price) + price; printf("the total cost is $%.2f.\n", total); return 0; }

In a home that has 120 v service, there is an electric appliance that has a resistance of 12 ohms. how much power will this appliance consume? a. 10 w b. 120 w c 1200 w d. 1440 w