CODEWITHSUNDEEP
c++vectorstdbitset
taurus05
taurus05

Reputation: 2546

Generating binary number using bitset causing segmentation fault in c++

Generating binary representation of numbers from 0 to 255. This is causing segmentation fault. Kindly enlighten.

    vector<bitset<7>> vb;
    for (i = 0; i < 256; i++)
    {
        bitset<7> b(i);
        vb[i] = b;
    }

    //print 
    for(i=0;i<256;i++){
        cout<<vb[i]<<"\n";

Upvotes: 0

Views: 64

Answers (2)

Cory Kramer
Cory Kramer

Reputation: 117856

When you declare your vector it is empty

vector<bitset<7>> vb;

you can initialize it with a given size

vector<bitset<7>> vb(256);

Otherwise simply assigning to the empty vector will be writing out of bounds since it has not (re)allocated memory for the elements you are trying to access

vb[i] = b;

Upvotes: 2

AlephRZS
AlephRZS

Reputation: 73

Your vector is of size 0. Either use

vb.push_back(b);

or initialize a size like:

vector<bitset<7>> vb(256);

Upvotes: 1

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