changing a var 1

[jimjake]

I want to pad the variable PWD with two spaces to make the char set 10
All is well until the last statement then the complier goes berserk telling me the variable Pwd
Is incompatible.









#include <iostream>
#include <cstring>

int main()
{

int len;
std::cout << "password";
char pwd[40];
std::cin >> pwd;
len = std::strlen(pwd);
std::cout << len;
if (len == 8)
pwd = pwd + (' ');


return 0;
}

 

[timmay3141]

C++ does not have high level string features built into the language. Concatination is NOT built in to the language, so the + doesn't work. Do it like this using the std::string class:

#include <iostream>
#include <cstring>
#include <string>

int main()
{
  
  int len;
  std::cout << "password";
  char pwd[40];
  std::cin >> pwd;
  std::string password = pwd;
  len = password.length();
  std::cout << len;
  if (len == 8)
    password += "  ";
  
   
 return 0;
}

 

[BlackDice]

or try strcat()

bdiamond

 

[ArkM]

Function strlen() (and others from C library from <c...> headers) is not a member of namespace std. It's in the global namespace, true reference is ::strlen(...) or simply strlen().

 

[EarlAllen]

Of course, the old C technique would be -

if (len==8) {
password[8]=' ';
password[9]=' ';
password[10]='\0';
}