Write the function prototypes for the following functions (do NOT implement the functions).a) displayInstructions: a function that doesn’t receive any inputs and prints some instructions to the screen.b) toUpperCase: a function that returns an upper-case character that corresponds to the lower-case character passed to it.c) isPositive: a function that takes as input a double number and returns whether the number is positive or not.d) computeArea: a function that takes as input two double numbers corresponding to the sides of a rectangle and returns the area of that rectangle.e) getNumber: a function that asks the user to enter an integer and returns that number.

void displayInstructions(); char toUpperCase(char); double isPositive(double); double…

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write the function prototypes for the following functions (do NOT implement the functions).

a) displayInstructions: a function that doesn’t receive any inputs and prints some instructions to the screen.
b) toUpperCase: a function that returns an upper-case character that corresponds to the lower-case character passed to it.
c) isPositive: a function that takes as input a double number and returns whether the number is positive or not.
d) computeArea: a function that takes as input two double numbers corresponding to the sides of a rectangle and returns the area of that rectangle.
e) getNumber: a function that asks the user to enter an integer and returns that number.

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