The wine cellar (C program, please it has to run like example. I been trying but just can,t get it right).

An eccentric wine lover buys individual labels of wine in either 1, 3, 6, or 12 bottle lots and consumes either 1 or 2 bottles of the same type at a time.

Unfortunately, his wine cellar can only hold 50 bottles and he is further constrained by the fact that he wishes it keep wines of a particular label in contiguous areas of his cellar so that he can easily tell how many bottles of a particular type he has left. Once positioned in the cellar, a bottle is never moved to another position.

Write and test a C program that shows how his wine stock varies as he buys and consumes wine.

Input: lines of the form

N, C N is 1, 3, 6, or 12 representing purchases or 1 or 2 representing consumption

C is an identifying character for the wine type

N = 0 terminates the program

Output

After each input line your program outputs either an error message or a depiction of the cellar

Example program run. It has to run exactly like this.

Enter number,type :7,a

invalid buy quantity: 7

Enter number,type :3,a

aaa

Enter number,type :6,b

aaabbbbbb

Enter number,type :-3,b

invalid consume quantity: -3

Enter number,type :-2,b

aaa bbbb

Enter number,type :6,c

aaa bbbbcccccc

Enter number,type :-1,c

aaa bbbb ccccc

Enter number,type :-2,d

consume failed

Enter number,type :6,b

buy failed

Enter number,type :3,b

aaabbbbbbbccccc

Enter number,type :12,d

aaabbbbbbbcccccdddddddddddd

Enter number,type :12,e

aaabbbbbbbcccccddddddddddddeeeeeeeeeeee

Enter number,type :12,f

buy failed

Enter number,type :-2,d

aaabbbbbbbccccc ddddddddddeeeeeeeeeeee

Enter number,type :-2,e

aaabbbbbbbccccc dddddddddd eeeeeeeeee

Enter number,type :3,f

aaabbbbbbbccccc dddddddddd eeeeeeeeeefff

Enter number,type :3,d

aaabbbbbbbcccccddddddddddddd eeeeeeeeeefff

Enter number,type :1,d

aaabbbbbbbcccccddddddddddddddeeeeeeeeeefff

Enter number,type :1,e

buy failed

Enter number,type :1,f

aaabbbbbbbccccdddddddddddddddeeeeeeeeeeffff

Enter number,type :0,x

Bye