Programming

typedef struct myStruct
{
    string s_date;
    float fA;
    float fB;
    float fC;
    .....
    float fZ;
} myData;

myData ind;
string sqlInsert = "INSERT INTO calculations (date, A, B, C, ..., Z) 
VALUES ('"+ind.s_date+"','"+ftostr(ind.fA)+"','"+ftostr(ind.fB)+"','"+ftostr(ind.fC)+"','"+ ... +"','"+ftostr(ind.fZ)+"')";

#include <map>
#include <string>

#define foreach(var, container)                 \
                for(typeof((container).begin()) var = (container).begin(); \
                var != (container).end(); \
                ++var)

int main(void)
{
        std::map<std::string,std::string> mydata;

        mydata["a"]="b";
        mydata["c"]="d";

        foreach(x, mydata)
        {
                cout << (*x).first <<" "<<(*x).second<<"\b";
        }
}