n00b question

Is there a way to declare an array in C so the indexing starts at something besides zero?  Like if I wanted the array to be a[-10] to a[10] instead of a[0] to a[20]?

>>4
#error hiss preprocessor

std::tr1::unordered_map allows you to define whatever you'd like as the array index.

#include <unordered_map>
#include <utility>
#include <vector>

using std::tr1::unordered_map;
using std::pair;
using std::vector;

int main() {
    unordered_map<int, int> golfclap;
    golfclap[-10] = 9001;

    unordered_map<std::string, int> stdclap;
    stdclap["AIDS"] = 9001;

    unordered_map< vector< pair<string, string> >, pair<int, int> > gagglefuck;
    vector< pair<string, string> > bob;
    pair<string, string> faggot;
    pair<int, int> faggot2;
    faggot.first = "dohoho";
    faggot.second = "HISS PREPROCESSOR";
    faggot2.first = 9001;
    faggot2.second = 8001;
    bob.push_back(faggot);
    gagglefuck[bob] = faggot2;

    return 0;
}