write a program in c++ use only

1. Write a program that inputs a line of text,replaces all punctuation marks with spaces.

2. Create a class called Complex for performing arithmetic with complex numbers.Write a program to test your class. Complex numbers have the form

realPart + imaginaryPart * i where iisUse double variables to represent the private data of the class. Provide a constructor that enablesan object of this class to be initialized when it’s declared. The constructor should contain defaultvalues in case no initializers are provided. Provide public member functions that perform the followingtasks: a) Adding two Complex numbers: The real parts are added together and the imaginary parts are added together. b) Subtracting two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is subtracted from the imaginary part of the left operand. c) Printing Complex numbers in the form (a, b), where a is the real part and b is the imaginary part.

3. Create a class HugeIntegerthat uses a 40-element array of digits tostore integers as large as 40 digits each. Provide member functions input, output, add and subtract.For comparing HugeIntegerobjects, provide functions isEqualTo, isNotEqualTo, isGreaterThan,isLessThan, isGreaterThanOrEqualToand isLessThanOrEqualTo—each of these is a function that simply returns true if the relationship holds between the two HugeIntegers and returnsfalse if the relationship does not hold. enter code here