Question

I’ve put the contents of a file in a char-array using this function:

void Read::readFile(){
FILE * fp = fopen(this->filename,"rt");
fseek(fp, 0, SEEK_END);
long size = ftell(fp);
fseek(fp, 0, SEEK_SET);
char *pData = new char[size + 1];
fread(pData, sizeof(char), size, fp);
fclose(fp);
this->data = pData;
}

Now I want to strip all line-endings from the char-array.
How do I do this without casting the char-array into a string first?

btw. this is part of a homework where we aren’t allowed to use the string-library.

Answer 1

#include <algorithm>
size = std::remove(pData, pData + size, '\n') - pData;
pData[size] = 0; // optional

For some C++11 lambda fun:

#include <algorithm>
size = std::remove_if(pData, pData + size, [](char c) { return c == '\n'; }) - pData;
pData[size] = 0; // optional