22. Computer Programming with flowcharting Technique (page 22)

FIG.24
7.1.4. d. DO [statement block] . . . LOOP [ (WHILE) condition ] 
1D1
10 CLS
15 PRINT “PROG017”
20 X = 1
30 DO
40 PRINT X;
50 X = X + 1
60 LOOP WHILE X < = 100
70 END

1D2.
10 CLS
15 PRINT “PROG018”
20 X = ( 1 – 1 )
30 DO
40 X = X + 1
50 PRINT X;
60 LOOP WHILE X < 100
70 END