How can I read a string with scanf() in C++?

Question

I can read a string with std::cin but I don't know how to read with one withscanf(). How can I change the code below to use scanf() ?

string s[20][5];

for (int i=1;i<=10;i++)
{
  for (int j=1;j<=3;j++) 
  {
      cin>>s[i][j];
  }
}

Answer 1

Using the C scanf() function requires using C strings. This example uses a temporary C string tmp, then copies the data into the destination std::string.

char tmp[101];
scanf("%100s", tmp);
s[i][j] = tmp;

Answer 2

You can't, at least not directly. The scanf() function is a C function, it does not know about std::string (or classes) unless you include .