CODEWITHSUNDEEP
stringvectorc++14cout
zyydoosh
zyydoosh

Reputation: 387

cannot print a string from a vector of strings

I have a vector of strings, and I fill the first string in it manually character by character

vector <std::string>  vec(6);
vec[0][0] = 'h';
vec[0][1] = 'e';
vec[0][2] = 'y';
cout << "vec[0] = " << vec[0] << "\n"

now I want to print the vec[0] which is supposed to be a string "hey" , but it prints empty space. I can print only if I print it character by character also, like this 

for(int i = 0 ; i<1 ; i++)
   {
       for(int j = 0 ; j < 3 ; j++)
       {
           cout << vec[i][j];
       }
       cout << "\n";
   }

Why I can't simply print the string as a whole.

Upvotes: 0

Views: 66

Answers (1)

Nevin
Nevin

Reputation: 4863

vector <std::string> vec(6); gives you a vector of six empty strings. vec[0][0] = 'h'; is trying to assign the character h into the first slot of the first empty string, which is not legal, as the bracket operator can only replace existing characters. Use something like vec[0] += 'h' to append to the string.

Upvotes: 2

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