c++ unable to get proper string input -

i new programming wrote simple function calculate length of string unable take input string user properly(have tried alternatives).

/////////function calculate length of string//////////////////// void str_length(){     char str[30];     int counter=0;     cout << "enter string: ";     gets(str);     //cin.getline(str,256);     //cin >> str;     for(int i=0;str[i] != '\0';i++){         counter++;     }     cout << "string length is: " << counter << endl; } /////////////////////////////////////////////////////////////// 

of possible ways program either exits abruptly or 'cin' can partial string till first space.

if tried cin.getline(str,256), you'd have needed buffer declared char str[256].

you shouldn't involving these things however. stick std::string:

std::string str; // declare string std::getline(std::cin, str); // line std::cin stream , put in str unsigned int stringlength = str.length(); // length of string