Ascii .txt 文件到字节数组 - C++

Question

How can I convert an ascii .txt file into an array of bytes in c++? For example given this .txt file of XYZ Coordinates convert it to an array of bytes in floating point representation:

253.9999929 58.0428367 -21.3930063253
.9999929 59.0435773 -21.2499391255
...

converts to

bytes array[] = {
01000011,01111110,00000000,00000000,
01000010,01101000,00101011,11011101,
11000001,10101011,00100100,11100001,
00111111,01111111,11111111,10001001... etc

}

I thought of converting each number in the string to a floating point number and then extracting the binary representation; but, im not sure if that's efficient. I need to do this on a large scale with a .txt file with 200000-1400000 lines of XYZ data.

Thanks!

Answer 1

Maybe this:

struct xyz{
    float x;
    float y;
    float z;
};

istream& operator >>(istream & is, xyz & v) {
    return is >> v.x >> v.y >> v.z;
}

std::ifstream f{"floats.txt"};

vector<xyz> floats;
copy(istream_iterator<xyz>{f}, {}, inserter(floats, end(floats)));