Can't initialize string array in constructor

[Avro1]

Hi everyone,

I am currently practicing designing classes. In one exercise, I am trying to store 15 words in an array, and randomly print one (using the rand() functions and seeding it with crime. I have a header file, a respective .cpp file, and a main .cpp file. When I try to compile the code using g++ GuessWord.cpp UseGuessWord.cpp -o UseGuessWord, I get the following error in my constructor: expected primary-expression before ‘{’ token

Here is my code:

header file (GuessWord.h):

#ifndef GUESSWORD
#define GUESSWORD
#include <string>
using namespace std;

class GuessWord{
	public:
		GuessWord();
		void Launch() const; //begins the game
		void displayWord(int number) const; //displays the word
	
	private:
		string words[15];

};


#endif 

Here is the respective .cpp file (GuessWord.cpp)

#include "GuessWord.h"
#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
using namespace std;

GuessWord::GuessWord(){ // initialize the word array
	words = {"automobile","lantern", "surfing", "woman", "university", "computer", "vacation", "television",
		"apartment", "airplane", "venom", "elephant", "recording",
		"Canada", "rhinoceros"};
}

void GuessWord::Launch() const{
	srand(time(0));
	int number = rand() % 15;
	string displayWord(number);
}

void displayWord(int number) const{
	cout << words[i] << endl;
}

Here is my main class (USeGuessWord.cpp)

#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
#include "GuessWord.h"
using namespace std;

int main(){
	GuessWord game1();
	game1.lauch();
	
	
	return 0;
}

I am new to C++, and any help would be greatly appreciated.

Thank you!

[Daleth]

In your constructor, you are not allowed to do such an assignment because your string array has already been created. It is like:

string arr[2];
arr = {"Hi", "there!"};

which is illegal.

Instead, you will have to use an initialization list, which looks like:

Foo::Foo()
   : arr(  //Note the colon which indicates the start of the list
      {"Blah", "Blah", /*...*/}
   ) //Also note that we use parentheses
{}

Using an initialization list declares the variable with the value(s), like:

string arr[2] = {"Hi", "There!"};

[28poGNh0]

I changed your code hope its fine

header file (GuessWord.h):

# ifndef GUESSWORD
# define GUESSWORD

# include <string>
using namespace std;

class GuessWord
{
	public:
		GuessWord();
		void Launch() const; //begins the game
		void displayWord(int number) const; //displays the word

	private:
		string words[15];
};

#endif 

Here is the respective .cpp file (GuessWord.cpp)

# include "GuessWord.h"

# include <iostream>
# include <string>
# include <ctime>
# include <cstdlib>
using namespace std;

GuessWord::GuessWord()
{
    // You can initialize the word array at this way since you know its elements number
	const char *szBuffer[] = {"automobile","lantern", "surfing", "woman", "university", 
                              "computer","vacation", "television","apartment", "airplane",
                              "venom", "elephant","recording","Canada", "rhinoceros"};

    for(int i=0;i<15;i++)
    {
        words[i] = szBuffer[i] ;
    }
}

void GuessWord::Launch() const
{
	srand(time(0));
	int number = rand() % 15;
	//string displayWord(number);
	displayWord(number);
}

// displayWord(int number) is a member of GuessWord class so...
void GuessWord::displayWord(int number) const
{
	// cout << words[i] << endl; i is underclared
	cout << words[number] << endl;
}

Here is my main class (USeGuessWord.cpp)

# include "GuessWord.h"

# include <iostream>
# include <string>
# include <ctime>
# include <cstdlib>
using namespace std;

int main()
{
	GuessWord game1;
	// game1.lauch(); Syntax wrong

	game1.Launch();

	return 0;
}

any question just ask

Hope that helps