Qbasic Compiler _hot_ May 2026

t1 = x + 3 t2 = t1 * 2 PRINT t2 Targets three possible back-ends:

| Environment | Execution Time (ms) | File Size | | :--- | :--- | :--- | | QBASIC Interpreter (DOSBox) | 4850 ms | .BAS = 2 KB | | QB64 Compiler (C++ backend) | 210 ms | .EXE = 2.1 MB | | FreeBASIC (GCC backend) | 95 ms | .EXE = 280 KB | | Theoretical Native QBASIC Compiler | ~80 ms | ~120 KB | qbasic compiler

This paper provides a comprehensive blueprint for anyone attempting to build or understand a QBASIC compiler. t1 = x + 3 t2 = t1