Use the C programming language to design a calculator.Stage 1: Design a calculator that can evaluate any expressions.Example: (1.2 2.3) * (3.4/4.5) / (-0.6) 78 * 89Stage 2: Extend the calculator to handle sin, cos, exp, log, etc.Stage 3: Further extend the calculator to handle multiple statements and print out the values for all variables.Example: Given a set of statements (read from a text file *.txt):int a, b, c; // integer variablesfloat d, e; // float variablesa = 5; b = 7; c = (12 23)

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