Write a program, which calculates the value of a given numeral expression given as a string. The numeral expression consists of:
- real numbers, for example 5, 18.33, 3.14159, 12.6;
- arithmetic operations: +, -, *, / (with their standard priorities);
- mathematical functions: ln(x), sqrt(x), pow(x, y);
- brackets for changing the priorities of the operations: ( and ).
Note that the numeral expressions have priorities, for example the expression -1 + 2 + 3 * 4 - 0.5 = (-1) + 2 + (3 * 4) - 0.5 = 12.5.
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Posted 21 Oct 2017 08:10 PM
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