Letter guessing game in C program, confused of errors - c

Question

I am trying to do a letter guessing game in C language by using Visual Studio 2012, but I keep getting errors and warnings and I have no clue how to fix them. The errors that I keep receiving are:
1.)Warning 1 warning C4133: 'function' : incompatible types - from 'FILE *' to 'const char *'
2.)Warning 2 warning C4047: '=' : 'FILE *' differs in levels of indirection from 'int (__cdecl *)(FILE *)'
3.)Error 3 error C2449: found '{' at file scope (missing function header?)
4.)Error 4 error C1004: unexpected end-of-file found
5.)IntelliSense: argument of type "FILE *" is incompatible with parameter
6.)IntelliSense: a value of type "int (__cdecl *)(FILE *_File)" cannot be assigned to an entity of type "FILE *"
I also see errors that say 'expected a declaration.'
Every time I try to fix things, I end up causing more issues in other areas. Could someone give me assistance with this? Thank you!
Here is my code:
#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#define MAXGUESSES 5
int SingleGame(char file_letter);
int main()
{
//declare additional variables
int PlayGames = 4,
i = 0;
FILE * infile;
char letter;
//display instructions
printf("Welcome to the Letter Guessing Game!\n");
printf("You will enter the number of games that you want to play, which is 1-4 games\n");
printf("You have 5 chances to guess each letter\n");
printf("Let's begin!\n");
//open file
infile = fopen("lettersin.txt", "r");
//get number of games to play
printf("How many games would you like to play?(1-4)\n");
scanf("%d", &PlayGames);
for(i=0;i<PlayGames;i++)
{
//get a letter from file
scanf(infile, " %c", &letter);
//Play one game
printf("Let's play a game %d\n", i);
//check for win or lose
SingleGame (letter);
}
//close file
infile = fclose;
return 0;
}
int SingleGame(char file_letter);
{
//Function definitions
int numGuesses = 0;
while(numGuesses < MAXGUESSES);
char RetrieveGuess = 0;
int PlayGames = 0;
{
printf("Enter a guess\n");
scanf("%c" , &RetrieveGuess);
if(file_letter == RetrieveGuess);
{
printf("You guessed it!\n");
}
else
{
if(file_letter>RetrieveGuess)
{
printf("The letter you are trying to guess comes before:%d\n",RetrieveGuess)
}
{
else if(file_letter<RetrieveGuess)
{
printf("The letter you are trying to guess comes after:%d\n", RetrieveGuess)
}
{
numGuesses = numGuesses +1;
}

Answer 1

1.)Warning 1 warning C4133: 'function' : incompatible types - from 'FILE *' to 'const char *'
scanf(infile, " %c", &letter);
If you want to read from a specific FILE *, use fscanf():
fscanf(infile, " %c", &letter);
2.)Warning 2 warning C4047: '=' : 'FILE *' differs in levels of indirection from 'int (__cdecl *)(FILE *)'
infile = fclose;
You want to call fclose() and not assign it to infile (which also doesn't have a compatible type):
fclose(infile);
3.)Error 3 error C2449: found '{' at file scope (missing function header?)
int SingleGame(char file_letter);
The semicolon makes that a function declaration/protoype, but you want to define one. Delete it.
The semicolon here is a so-called null statement). This means if both variables are equal, then nothing will be done.
if(file_letter == RetrieveGuess);

Answer 2

You have a number of issues with your code here. It is always difficult to work on more than one problem at a time. My advice is that you copy all this code into a different file, and rebuild this file one line at a time and only add another line after you compile the current file error and warning free.

Answer 3

Lots of syntax errors were in code. I've corrected them for you. Although not sure logically the code is correct or not. You got to run and see.
#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#define MAXGUESSES 5
void SingleGame(char file_letter);
int main()
{
//declare additional variables
int PlayGames = 4,
i = 0;
FILE* infile;
char letter;
//display instructions
printf("Welcome to the Letter Guessing Game!\n");
printf("You will enter the number of games that you want to play, which is 1-4 games\n");
printf("You have 5 chances to guess each letter\n");
printf("Let's begin!\n");
//open file
infile = fopen("lettersin.txt", "r");
//get number of games to play
printf("How many games would you like to play?(1-4)\n");
scanf("%d", &PlayGames);
for(i=0;i<PlayGames;i++)
{
//get a letter from file
fscanf(infile, " %c", &letter);
//Play one game
printf("Let's play a game %d\n", i);
//check for win or lose
SingleGame (letter);
}
//close file
fclose(infile);
return 0;
}
void SingleGame(char file_letter)
{
//Function definitions
int numGuesses = 0;
while(numGuesses < MAXGUESSES)
{
char RetrieveGuess = 0;
int PlayGames = 0;
printf("Enter a guess\n");
scanf("%c" , &RetrieveGuess);
if(file_letter == RetrieveGuess)
{
printf("You guessed it!\n");
}
else
{
if(file_letter>RetrieveGuess)
{
printf("The letter you are trying to guess comes before:%d\n",RetrieveGuess);
}
else if(file_letter<RetrieveGuess)
{
printf("The letter you are trying to guess comes after:%d\n", RetrieveGuess);
}
numGuesses = numGuesses +1;
}
}
}