Free-form Fortran
Modified source; current state unchanged. Restart and run source to apply edits.
Suggested END lines (not submitted)
Enter submits; Shift+Enter adds a line.
Expressions show their value. Blocks wait for END. Auto-end previews END DO and END IF; Finish block submits the innermost END. Auto-declare infers missing scalar variables from a single top-level assignment; existing types stay unchanged. Commands: .run, .list, .vars, .info, .clear, .help.
02 / RESULTSReady
Output
Warnings & errors
03 / VARIABLESCurrent state
Types, shapes and bounded value previews. Unset variables must be assigned before use.
(no variables)
Supply input before running