| 100 REM "4 nested for loops" | |
| 110 PRINT "4 nested 4 loops" | |
| 120 Z=0 | |
| 200 FOR I=1 TO 2 | |
| 210 FOR J=1 TO 2 | |
| 220 FOR K=1 TO 2 | |
| 230 FOR L=1 TO 2 | |
| 240 Z=Z+1 | |
| 250 PRINT Z;" :",I,J,K,L | |
| 260 NEXT L | |
| 270 NEXT K | |
| 280 NEXT J | |
| 290 NEXT I | |
| 300 PRINT "16 lines should show here" | |
| 310 END |