C++: Difference between revisions

C++ (view source)

612 bytes added , 23 October 2019

5,321

edits

@@ Line 63: / Line 63: @@
    }
    return 0;
+}
+</syntaxhighlight>
+====Reading a whole file====
+[https://insanecoding.blogspot.com/2011/11/how-to-read-in-file-in-c.html Reference and comparison of different methods]
+<syntaxhighlight lang="C++">
+#include <fstream>
+#include <string>
+#include <cerrno>
+std::string get_file_contents(const char *filename)
+{
+  std::ifstream in(filename, std::ios::in | std::ios::binary);
+  if (in)
+  {
+    std::string contents;
+    in.seekg(0, std::ios::end);
+    contents.resize(in.tellg());
+    in.seekg(0, std::ios::beg);
+    in.read(&contents[0], contents.size());
+    in.close();
+    return(contents);
+  }
+  throw(errno);
 }
 </syntaxhighlight>