CODEWITHSUNDEEP
c++std
Hossein
Hossein

Reputation: 4137

What's the most efficient way of reading an ifstream into an string?

noob question! How can i read 'a whole ifstream' into a stdlib 'string'? The current way i'm using for all my projects right now wastes much time i think:

string code;
ifstream input("~/myfile");
char c1=input.get();
while (c1!=EOF)
{
    code+=c1;
    len++;
    c1=input.get();
}

BTW i prefer to do line and whitespace management myself.

Upvotes: 4

Views: 1097

Answers (2)

Robᵩ
Robᵩ

Reputation: 168626

#include <string>
#include <iostream>

int main() {
   std::string s;

   std::getline(std::cin, s, '\0');
   std::cout << s;
}

~

Upvotes: 4

genpfault
genpfault

Reputation: 52083

string load_file(const string& filename)
{
    ifstream infile(filename.c_str(), ios::binary);
    istreambuf_iterator<char> begin(infile), end;
    return string(begin, end);
}

Upvotes: 8

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