Question

# in C 

Project objective: Conditional statements, loops, reading from file, user defined functions.

**Submit source code (prog3.c) through Canvas

• One source code file(unformatted text) will be submitted

• Here is INCOMPLETE code to get started: prog3.c

• Here is input.txt file: input.txt

• The file name must match the assignment

• The code should be tested and run on a Microsoft compiler before it is uploaded onto Canvas

• The code must be submitted on time in order to receive credit (11:59PM on the due date)

• Late submissions will not be accepted or graded

• All programming assignments are individual work,sharing code is considered cheating

• ASCII (American Standard Code for Information Interchange)

  You will need to use functions from:

  #include//printf, scanf, fopen, fscanf, fclose

  #include//toupper and tolower

  #include//absolute value

  //EXAMPLE: result = abs(number1 – number2);

  Be sure to save the input.txt file into the same directory as source code file (remember to use your Z drive on portal.eng.fau.edu)

How to Submit:

Submit your source code (prog3.c) by clicking the link, attaching your source code (prog3.c), and clicking submit.

This should be one file and MUST be the file with the .c extension. Submitting the incorrect file may result in no credit for the assignment.

Instructions:

Write a fully executable code.

1. Include the following libraries in the preprocessor directives: stdio.h, ctype.h, stdlib.h

2. Open the input file. Define steps 3-6 below in a function called PlayLetterGame. Remember to declare the function prototype and place the function call at the appropriate location in the main function.

3. Read a letter from the input file

4. Ask the user to guess the letter from the input file

5. Calculate the distance of the user's guessed letter from the letter of the input file (hint: make both letters the same case (upper or lower) and use the ASCII codes of the letters). Ignore the case of the letters in assessing correctness of the guess (i.e. if the letter in the input file was a 'b' and the user's guess was a 'B' then the user guessed the letter).

6. If the user guessed the letter, display a congratulatory message, if the user's guess was less than 3 letters off, display an encouraging message. In any case display the distance between the user's guessed letter and the letter from the input file and reveal the letter from the input file.

7. Ask the user if (s)he wants to play again and if yes (and the input file is not read until the end) repeat steps 3.-6.

8. Close the file.

Answer 1

Please find the answer below, I have mentioned all the details in the comments.

#include //printf, scanf, fopen, fscanf, fclose
#include //toupper and tolower
#include //absolute value
//EXAMPLE: result = abs(number1 – number2);

void PlayLetterGame(FILE *file){
//variables
char fromFile;
char guess;
//check if the file is valid
if(file!=NULL){
//read the char from file
if(fscanf(file,"%c",&fromFile) != EOF){
}
}

//ask the user to guess the letter
getchar();
printf("Guess the Letter form the file:");
scanf("%c",&guess);
printf("\nYour Guess: %c\n",guess);

//calculate the distance
int distance = abs(toupper(fromFile) - toupper(guess));

//print the message according to the distance
if(distance == 0){
printf("Congratulations!! You guessed it Correct.\n");
}
else if(distance<3){
printf("Ohh!! Very close to the correct Guess.\n");
}
else{
printf("Sorry! You guessed it wrong.\n");
}

//print the details for the user.
printf("Distance to the Letter from the file is: %d\n",distance);
getchar();
printf("Secret Letter from the File is: %c\n",fromFile);
}

int main(){
//get the file object
FILE *file;
//open the file
file = fopen("input.txt", "r");

//call the function to play the game
char choice;
while(1){
PlayLetterGame(file);
printf("Do you want to play again? Enter (Y/N): ");
//getchar();
scanf("%c",&choice);
if(toupper(choice) != 'Y')
break;
}

return 0;
}

Output:

Sorry! You guessed it wrong. Distance to the Letter from the file is: 4 Secret Letter from the File is: A Do you want to play again? Enter (Y/N): Y Guess the Letter form the file:C Your Guess: c Ohh!! Very close to the correct Guess. Distance to the Letter from the file is: 1 Secret Letter from the File is: B Do you want to play again? Enter (Y/N): Y Guess the Letter form the file:C Your Guess: c Congratulations!! You guessed it Correct. Distance to the Letter from the file is: 0 Secret Letter from the File is: C Do you want to play again? Enter (Y/N): N "",""error"":null,""modified"":1560926362,""source"":""automated""}"

Guess the Letter form the file:F Sorry! You guessed it wrong. Distance to the Letter from the file is: 5 Secret Letter from the File is: A Oco