Question

Intro to Programming in C – Large Program 1 – Character/ Number converter

Assignment Purpose: To compile, build, and execute an interactive program with a simple loop, conditions, user defined functions and library functions from stdio.h and ctype.h.

You will write a program that will convert characters to integers and integers to characters

General Requirements
• In your program you will change each letter entered by the user to both uppercase AND lowercase–

o Use the function toupper in #include <ctype.h>

o Use the function tolower in #include <ctype.h>
• You will create a numerical version of both the upper- and lower-case versions of the character

o NOTE: for characters that are not letters both upper and lower will be the sameo Example:

• int upperNumber = (int)upper;

• int lowerNumber = (int)lower;

• You will create a character version each integer entered by the user (positive or negative)

o Example:
• char CharacterN = (char)numberInput;

• You will ask the user if they want to Enter a (1) to enter a character --- (2) to enter a number or --- (0) to Quit

• You must have at least 6 user defined functions as follows:

o No modifications may be made to the functions

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#include <ctype.h>

//greets the user

void Greeting();
//Asks, gets, and returns the users option (1, 2, or 0)

int UserDecision();

//Declare a character
//Ask, get, and return the characterchar GetLetter();

//Declare an integer
//Ask, get, and return the integerint GetInt();

//input: a character
//creates a lowercase and uppercase version of the character //finds the numerical versions of the characters
//prints the results onto the screen
void ProcessCharacterInput(char characterInput);

//input: an integer
//finds a corresponding character for the integer (if there is one) //returns the character version of the integer
char ProcessIntegerInput(int numberInput);

Additional Requirements:

• Use function prototypes.

• Write comments for each function that will appear in the file before each prototype and again before each

  function definition.

• Be sure to comment your code adequately.

• Be sure to indent properly. Check your textbook and lecture code examples to see how it should be done.

• Use meaningful variable names

  **PLEASE MAKE SURE CODE MATCHES SAMPLE OUTPUT**

• SAMPLE OUTPUT:   

  Welcome to the number/ character converter!
  This program converts characters to numbers and numbers to characters

  --You may enter any single character on the keyboard --You may enter any integer value, negative or positive --You may be surprised by the output!!

  ------------------------------------------------------------------------- Would you like to enter a character or a number?

  (ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> 1 Enter a character: k
  The capital letter is K and the numerical value is 75
  The lowercase letter is k and the numerical value is 107 -------------------------------------------------------------------------

  Would you like to enter a character or a number?

  (ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> 1

  Enter a character: &

  The capital letter is & and the numerical value is 38

  The lowercase letter is & and the numerical value is 38

  ------------------------------------------------------------------------- Would you like to enter a character or a number?

  (ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> 2 Enter a number: -32

  The corresponding character for -32 is α-------------------------------------------------------------------------

Would you like to enter a character or a number?
(ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> 2 Enter a number: 241

The corresponding character for 241 is ± ------------------------------------------------------------------------- Would you like to enter a character or a number?

(ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> 0 Press any key to continue . . .

Answer 1

//C program

#include <stdio.h>

#include <ctype.h>

void Greeting(){
   printf("Welcome to the number/ character converter! ");
printf("This program converts characters to numbers and numbers to characters ");}

int UserDecision(){
   int choice;
   printf("Would you like to enter a character or a number? ");
   printf("(ENTER (1) to enter a character, (2) to enter a number, (0) to quit) >> ");
   scanf("%d",&choice);
   return choice;
}
//Declare a character
//Ask, get, and return the character
char GetLetter(){
   char ch;
   printf("Enter a character: ");
   scanf(" %c",&ch);
   return ch;
}

//Declare an integer
//Ask, get, and return the integer
int GetInt(){
   int n;
   printf("Enter a number: ");
   scanf("%d",&n);
   return n;
}

//input: a character
//creates a lowercase and uppercase version of the character //finds the numerical versions of the characters
//prints the results onto the screen
void ProcessCharacterInput(char characterInput){
   char upper = toupper(characterInput);
   char lower = tolower(characterInput);
   printf("The capital letter is %c and the numerical value is %d ",upper ,(int)upper);
   printf("The lowercase letter is %c and the numerical value is %d ",lower ,(int)lower);
}

//input: an integer
//finds a corresponding character for the integer (if there is one) //returns the character version of the integer
char ProcessIntegerInput(int numberInput){
   printf("The corresponding character for %d is %c ",numberInput ,(char)numberInput);
}

int main(){
   Greeting();
   int choice ;
   do{
       choice=UserDecision();
       switch(choice){
           case 1:{
               char ch=GetLetter();
               ProcessCharacterInput(ch);
               break;
           }
           case 2:{
               int n =GetInt();
               ProcessIntegerInput(n);
               break;
           }
           case 0:{
               printf("Goodbye! ");
               break;
           }
           default:{
               printf("Invalid input ");
               break;
           }
       }
      
   }while(choice!=0);
   return 0;
}

//sample output