You need to develop a special calculator with the following features: a. Add 2 number. b. Divide 2 number. c. Multiply 2 number. d. Modulus of 2 numbers. e. Convert Decimal to Binary f. Convert...

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C language

Extracted text: You need to develop a special calculator with the following features: a. Add 2 number. b. Divide 2 number. c. Multiply 2 number. d. Modulus of 2 numbers. e. Convert Decimal to Binary f. Convert Decimal to Octal g. Convert Decimal to Hexadecimal Instructions: Produce the pseudocode for each of the features. Write a complete C program that allows the user to choose the feature from a menu and display the result. Each of the feature must be implemented using appropriate C function. Produce test cases for each function that you have developed. 1. 2. 3. 4.