Re-using Functions In Other Programs
Consider the three functions from the statistical analysis program discussed earlier:
data.cpp:
void read_data(istream& input, vector<double>& data) { ... }
stats.cpp:
double mean(const vector<double>& data) { ... } double stdev(const vector<double>& data) { ... }
These functions are generally useful – but how do we make them easily available for use in other programs?