c++ output not as expected

#include <iostream>
#include <stdio.h>
#include <cstring>
#include <vector>

using namespace std;

int main()
{
    FILE *fp;
    vector <const char*> v;
    char vchar[100];
    fp = fopen("lab5.in", "r");
    while (fgets(vchar, 99, fp))
    {
        vchar[strlen(vchar) - 1] = 0;
        v.push_back(vchar);
    }
    cout << "\n";
    for (int i = 0; i < v.size(); i++)
        cout << v[i] << " ";
    fclose(fp);
    return 0;
}

I have the above code.

asd
fsa
def

And the above lab5.in file.

In code:blocks

Expected output: asd fsa def Actual output: def def def

In Visual Studio: I get "Debug assertion failed" error, no output. I have #include "stdafx.h" in visual studio added.

Could you please help me?