Question

I’m using Cygwin with GCC, and ultimately I want to read in a file of characters into a vector of characters, and using this code

#include <fstream>
#include <vector>
#include <stdlib.h>

using namespace std;

int main (int argc, char *argv[] )
{
    vector<char> string1();
    string1.push_back('a');

    return 0;
}

generates this compile time error:

main.cpp: In function int main(int,
char**)': main.cpp:46: error: request
for memberpush_back’ in string1',
which is of non
-class typestd::vector > ()()’

I tried this with a vector of ints and strings as well and they had the same problem.

Answer 1

Don’t use parentheses to invoke the default constructor:

vector<char> string1;

Otherwise this declares a function string1 that takes no argumentes and returns a vector<char>.