Призыв к функции неоднозначен в C ++. Функции-кандидаты — это прототип и сама функция

Я работаю в Stanford CS106B C ++ и у меня есть «семантическая проблема» с заданием.

Кажется, что компилятор не может определить, является ли вызов функции или прототипом функции. Я не понимаю, почему вызов будет сделан на прототип. Как я могу сделать так, чтобы был сделан вызов функции, а не прототипу? Я получаю сообщение об ошибке «Вызов« peopleTurn »неоднозначен».

Сообщения об ошибках относятся к вызовам функции peopleTurn (Lexicon, Lexicon) внутри функции peopleTurn (Lexicon, Lexicon) внизу страницы. Прототип этой функции находится над основной функцией.

Любая помощь будет принята с благодарностью.

С уважением,

Mehul

    /*
* File: Boggle.cpp
* ----------------
*/

#include <iostream>
#include "gboggle.h"#include "graphics.h"#include "grid.h"#include "vector.h"#include "lexicon.h"#include "random.h"#include "simpio.h"using namespace std;

/* Constants */

const int BOGGLE_WINDOW_WIDTH = 650;
const int BOGGLE_WINDOW_HEIGHT = 350;

const string STANDARD_CUBES[16]  = {
"AAEEGN", "ABBJOO", "ACHOPS", "AFFKPS",
"AOOTTW", "CIMOTU", "DEILRX", "DELRVY",
"DISTTY", "EEGHNW", "EEINSU", "EHRTVW",
"EIOSST", "ELRTTY", "HIMNQU", "HLNNRZ"};

const string BIG_BOGGLE_CUBES[25]  = {
"AAAFRS", "AAEEEE", "AAFIRS", "ADENNN", "AEEEEM",
"AEEGMU", "AEGMNN", "AFIRSY", "BJKQXZ", "CCNSTW",
"CEIILT", "CEILPT", "CEIPST", "DDLNOR", "DDHNOT",
"DHHLOR", "DHLNOR", "EIIITT", "EMOTTT", "ENSSSU",
"FIPRSY", "GORRVW", "HIPRRY", "NOOTUW", "OOOTTU"};

/* Function prototypes */

void welcome();
void giveInstructions();
// Create random board
static Grid <char> randomBoard();
// Create custom board
static Grid<char> customBoard();
static void drawAndFillBoard(Grid<char>);
static void humansTurn(Lexicon,Lexicon);

int main() {
initGraphics(BOGGLE_WINDOW_WIDTH, BOGGLE_WINDOW_HEIGHT);
welcome();
giveInstructions();
string custom = getLine("Type y to create custom board:" );
Grid<char> gridData;
if (custom=="y"){
gridData = customBoard();
} else {
gridData = randomBoard();
}
drawAndFillBoard(gridData);
Lexicon english("EnglishWords.dat");
// Lexicon holds words previously encountered
Lexicon previousWords;
humansTurn(english, previousWords);
return 0;
}

/*
* Function: welcome
* Usage: welcome();
* -----------------
* Print out a cheery welcome message.
*/

void welcome() {
cout << "Welcome!  You're about to play an intense game " << endl;
}

/*
* Function: giveInstructions
* Usage: giveInstructions();
* --------------------------
* Print out the instructions for the user.
*/

void giveInstructions() {
cout << endl;
cout << "The boggle board is a grid onto which I ";
cout << "or triple your paltry score." << endl << endl;
cout << "Hit return when you're ready...";
getLine();
}

static Grid<char> randomBoard(){
Vector<string> standardCubes;
for(int i = 0; i<16;i++){
standardCubes.add(STANDARD_CUBES[i]);
}
// Shuffle cubes
for (int i = 0; i < standardCubes.size(); i++) {
int r = randomInteger(i, standardCubes.size()-1);
if (i!=r){
string stringToMove1 = standardCubes.get(i);
string stringToMove2 = standardCubes.get(r);
standardCubes.set(r, stringToMove1);
standardCubes.set(i, stringToMove2);
}
}
// Update grid with random side of cube
Grid<char> gridData(4, 4);
int counter = 0;
for (int columnNo = 0; columnNo <4; columnNo++){
for (int rowNo = 0; rowNo<4; rowNo++) {
string s = standardCubes.get(counter);
int r = randomInteger(0, 5);
gridData[columnNo][rowNo] = s[r];
counter++;
}
}
return gridData;
}

static Grid<char> customBoard(){
Grid<char> gridData(4,4);
string s = getLine("Please enter 16 characters to make up the custom board. Characters will fill the board left to right, top to bottom: ");
for (int i = 0; i < s.length(); i++) {
s[i] = toupper(s[i]);
}
if (s.length()<16){
cout << "String has to be 16 characters long, try again" << endl;
customBoard();
}
int i =0;
for (int columnNo = 0; columnNo <4; columnNo++){
for (int rowNo = 0; rowNo<4; rowNo++) {
gridData[columnNo][rowNo] = s[i];
i++;
}
}

return gridData;
}

static void drawAndFillBoard(Grid<char> gridData){
drawBoard(4, 4);
for (int columnNo = 0; columnNo <4; columnNo++){
for (int rowNo = 0; rowNo<4; rowNo++) {
labelCube(rowNo, columnNo, gridData[rowNo][columnNo]);
}
}
}

static void humansTurn(Lexicon englishWords, Lexicon &previousWords){
/*
Human’s turn (except for finding words on the board). Write the loop that allows the user to enter words. Reject words that have already been entered or that don’t meet the minimum word length or that aren’t in the lexicon. Use the gboggle functions to add words to the graphical display and keep score.
*/

string humanGuess = getLine("Please enter your guess: ");
for (int i = 0; i < humanGuess.length(); i++) {
humanGuess[i] = tolower(humanGuess[i]);
}
if (humanGuess.length()<4){
cout << "Min guess length is four characters" << endl;
humansTurn(englishWords, previousWords);
}
if (!englishWords.contains(humanGuess)) {
cout << "That word is not English, please try another word" << endl;
humansTurn(englishWords, previousWords);
}
if (previousWords.contains(humanGuess)){
cout << "That word has already been guessed, please try another word" << endl;
humansTurn(englishWords, previousWords);
}
// check if word can be made using data on board

}