std::string to const char*

[devodid]

I have this portion of a code and I'm receiving this error
error C2664: 'strcmp' : cannot convert parameter 1 from 'std::string' to 'const char *'
So how would I convert std::string to const char * ??

bool inDictionary(string word, string dictionary[198])
	
{
	int index = 0;
	bool in_boolean = false;
	while (index < 198 && in_boolean == true)
	{
		in_boolean = strcmp(word, dictionary[index]);
		index++;
		
	}


	return in_boolean;

}

Any and all help is appreciated!! thanks

[Peter87]

Use operator== to compare std::strings.
in_boolean = word == dictionary[index];

[MikeyBoy]

And for when you have a real need to convert to a const char *, use the string::c_str() method:

http://www.cplusplus.com/reference/string/string/

[devodid]

I addedin_boolean = word == dictionary[index]; but it still doesn't work

[Disch]

but it still doesn't work

Define "doesn't work".

in_boolean = word == dictionary[index]; will work just fine. The only way it could "not work" if is word does not match dictionary[index].

[cire]

	int index = 0;
	bool in_boolean = false;
	while (index < 198 && in_boolean == true)

Substituting the initial values for index and in_boolean into the the while condition:

while ( 0 < 198 && false == true )

See a problem there?

[devodid]

This is what I have but it still produces the same error when i debug

bool inDictionary(string word, string dictionary[198])

	
{
	int index = 0;
	bool in = false;
	in = word == dictionary[index];
	while (index < 198 && in == true)
	{	
		in = strcmp(word, dictionary[index]);

		index++;
		
	}


	return in;

}

[cire]

As with the first loop, this new one will never execute as in is false when the loop condition is first evaluated.

[Stewbond]

I'd do this:

bool inDictionary(string word, string dictionary[198])
{
    for (int i = 0; i < 198; ++i)
        if (word == dictionary[i])
            return true;
    return false;
}

Note there is room for optimizing your search (especially if dictionary is in alphabetical order)

[Dy7SLyTq]

why not a map with a look up [edit] function?