Eight non-zero positive number of a set of data, a decimal point, long can have 30 sets of data, each data in the current operation is not repeated calls, such as the fifth data in the same operation can not appear the second time, using c language or any program to produce a executable program, list all four mixed operations of each group of data operation, including bracket operation mode, or compare all data sets whether there is repeated as a result, in the current operation will repeat the result and its operation type printing or listed

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Note: not to write a calculator