source: doc/theses/mike_brooks_MMath/programs/hello-accordion.cfa@ c2f6b79

#include <fstream.hfa>
#include <stdlib.hfa>
#include <array.hfa>
#include <string.hfa>





forall( [C], [S] ) $\C{// num courses, num students}$
struct School {
        @array@( string, C ) course_codes; $\C{// nested VLAs}$
        @array@( string, S ) student_ids;
        @array@( int, C, S ) preferences; $\C{// multidimensional}$
};














forall( [C], [S] )
int getPref( @School( C, S ) & school@, int is, int pref ) {
        for ( ic; C ) {
                if ( pref == @school.preferences@[ic][is]; ) return ic; $\C{// offset calculation implicit}$
        }
        assert( false );
}













int main() {
        int nc, ns;
        sin | nc | " courses,";
        sin | ns | " students";
        @School( nc, ns ) school;@
        // ... elided: read data into school




        {       string sv;
                int iv;
                // headers' row
                sin | "\nc\\s";
                for ( is ; ns ) {
                        // column label
                        sin | sv;
                        school.student_ids[is] = sv;
                }
                // body rows
                for ( ic ; nc ) {
                        // row label
                        sin | sv;
                        school.course_codes[ic] = sv;
                        for ( is ; ns ) {
                                // matrix item
                                sin | iv;
                                school.preferences[ic][is] = iv;
                        }
                }
        }









        for ( is; ns ) {
                sout | school.student_ids[is] | ": " | nonl;
                for ( pref; 1 ~= nc ) {
                        int ic = getPref( school, is, pref );
                        sout | school.course_codes[ ic ] | nonl;
                }
                sout | nl;
        }
}


// Local Variables: //
// compile-command: "sed -f sedcmd hello-accordion.cfa > ../build/tmp.cfa; cfa ../build/tmp.cfa -Wall -Wextra" //
// End: //