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Enter the number of quadruples: 3
Enter operator for quadruple 1: +
Enter arg1 for quadruple 1: a
Enter arg2 for quadruple 1: b
Enter result for quadruple 1: t1
Enter operator for quadruple 2: *
Enter arg1 for quadruple 2: t1
Enter arg2 for quadruple 2: c
Enter result for quadruple 2: t2
Enter operator for quadruple 3: -
Enter arg1 for quadruple 3: t2
Enter arg2 for quadruple 3: d
Enter result for quadruple 3: t3