Export values from SQLite Database to CSV

I need to export values from an Sqlite table with 3 Columns to a CSV File. Should write a loop and use the Select Query to Dump all Values or is there an inbuilt SQL Function to do this..

Im here

void writecsv()
{
   char c[1000];
   FILE *fptr;
   fptr=fopen("output.csv","w");

}