chapter2
........\EXA
........\...\ex2_1.c
........\...\ex2_2.c
........\...\ex2_3.c
........\...\ex2_4.c
........\...\ex2_5.c
........\pb11ex1.c
........\PB11EX2.BAK
........\pb11ex2.c
........\PB11EX5.BAK
........\pb11ex5.c
........\PB11EX6.BAK
........\pb11ex6.c
........\PB11EX7.C
........\prb11.ex7.c
........\PRB11EX3.BAK
........\prb11ex3.c
........\PRB11EX4.BAK
........\prb11ex4.c
........\PROBL10.C
........\PROBLE2.BAK
........\Proble2.c
........\PROBLEM1.BAK
........\Problem1.c
........\problem10.c
........\PROBLEM3.BAK
........\Problem3.c
........\PROBLEM4.BAK
........\Problem4.c
........\PROBLEM5.BAK
........\Problem5.c
........\PROBLEM6.BAK
........\problem6.c
........\PROBLEM7.BAK
........\problem7.c
........\PROBLEM8.BAK
........\Problem8.c
........\PROBLEM9.BAK
........\problem9.c