split char array and store in vector

[rts17893]

I've searched everywhere and can't find a way to split a char array by space (" ") and store each word into a vector.

For example, user inputs "House 400", splitInput [0] = House, splitInput [1] = 400.

...

int main()
{
string input;
vector <string> splitInput;

getline(cin, input);

char* chararray = new char[input.length() + 1]; 
strcpy_s(chararray, input.length() + 1, input.c_str());

//code to split chararray by space and store into splitInput

}

[jonnin]

don't use char array if you can use string.
strtok may do what you want.
if not you can do it by hand by copying.

more or less:

for(all the letters in the char array)
{
    if(array[index] != ' ')
      vec[currentword][currentposition++] = array[index];
     else
 {
      vec[currentword++][currentposition] = 0;
      currentposition = 0;  
 }
}

but it would be much easier if you could use substrings or other c++ tools instead of the c-string nonsense.

[dutch]

#include <iostream>
#include <string>
#include <vector>
#include <cctype>

std::vector<std::string>
split(const std::string& line) {
    std::vector<std::string> tokens;
    size_t i = 0;
    while (i < line.size()) {
        for ( ; i < line.size() && isspace(line[i]); ++i) ;
        if (i >= line.size())
            break;
        size_t start = i;
        for ( ; i < line.size() && !isspace(line[i]); ++i) ;
        tokens.push_back(line.substr(start, i - start));
    }
    return tokens;
}

int main() {
    std::string line;
    std::getline(std::cin, line);
    auto tokens = split(line);
    for (const auto& tok: tokens)
        std::cout << '[' << tok << "]\n";
}

[deleted account xyzzy]

As jonnin points out you are already using std::string to get your input, use std::string as your vector type.

With spaces as your word delimiters parsing out individual words using a std::stringstream is one way to do it.

https://en.cppreference.com/w/cpp/io/basic_stringstream

#include <iostream>
#include <string>
#include <vector>
#include <sstream>

int main()
{
   // create an empty vector
   std::vector<std::string> strvec;

   std::string input;

   std::cout << "Enter a sentence:\n";
   std::getline(std::cin, input);
   std::cout << '\n';

   std::stringstream strbuf { input };

   std::string temp;

   while (strbuf >> temp)
   {
      strvec.push_back(temp);
   }

   std::cout << "The string vector's size: " << strvec.size() << '\n';

   std::cout << "The string vector contains:\n";

   for (const auto& itr : strvec)
   {
      std::cout << itr << '\n';
   }
}

Enter a sentence:
this is a test of a string stream

The string vector's size: 8
The string vector contains:
this
is
a
test
of
a
string
stream

If you need a C string (char array) from the elements use the string's c_str() member function.

https://en.cppreference.com/w/cpp/string/basic_string/c_str

[jonnin]

I feel dirty but here is the hands-on C-string code. Try not to do stuff like this.

int main()
{  
   char c[] = "the quick brown fox 1234";
   int l = strlen(c);
   vector<char[100]> vc(20); //you can use a push-back somewhere if you don't want to do this up front.  The extras print extra lines below, but this isnt exactly code of the year anyway. 
   int w = 0;
   int p = 0;
   for(int i = 0; i <= l; i++)
   {
	if(c[i] != ' ' && c[i])
      vc[w][p++] = c[i];
    else
	{
		  vc[w++][p] = 0;
		  p = 0;
	}		
	   
   }
   for(int i = 0; i < vc.size(); i++)
    cout << vc[i] << endl;
}