Create a cfg describing regular expressions over the alphabet {0, 1}. you will need to quote the regular expression operators and the template given you has them quoted as terminals. we expect the grammar to generate the following syntactic constructions:

• union via "|", for example, 0 1 "|" 1 should be in the language generated by the grammar

• intersection via "& ", for example, 0 1 "& " 1 should be in the language

• concatenation: any nonempty sequence of regular expressions should be in the language

• the empty string, which is denoted with the terminal e. for example, 0 "|" e should be in the language

• parentheses: for example, "(" 0 1 ")" should be in the language • kleene star: for example, "(" 0 1 ")" "*" should be in the language

• complement: for example, "-" "(" 0 "*" ")" should be in the language

Through the process of sedimentation,sediment is turned back to rock to form sedimentation.the process of sedimentation is: > deposition-where fragments were deposited into the river or sea under gravity or travelling agent such as wind or water. > sedimentation-the fragments deposited in the river sedimented and accumulate> compaction-the layers of fragments deposited undergoes compaction due to the weight if the upper layers> cementation-chemical substance of the fragments such as cement dissolved into the water and cement the other fragments together to form sedimentary rock.thus,cementation and compaction are the process.on the other hand, transformation only occur when a rock under goes metamorphism(compaction or extreme heat).while recrystillization occurs when a rock is melted and cooled down,which also requires metamorphism to take place.hope it !

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Cprogram to find //perimeter of rectangle printf(" \n perimeter of rectangle \n"); printf(""); printf("\n enter width and length of the rectangle : "); scanf("%f%f", & width,& length); perimeter = 2 * (width + length); printf("perimeter of rectangle is: %.3f", perimeter);  

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