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1、标准C语言程序设计第五版课后练习题答案 课后练习题答案 Chapter 1 1.1 1.2b c 1.3ad 1.4semicolon printf math.h n Chapter 2 2.1 2.2 typedef 255 external const Chapter 3 3.1 3.2 integer modula 6 logical sizeof paratheses typeconversion precedence 3.3 F F T F F F 3.4 F T T T F 3.5 (b) (c) 3.6 0 -2 7 10.25 false 3 3 1 3.10 0 1 1 1
2、1 3.11 d 100 3.12 110 111 3.13 1 3.14 200 3.15 x= 50) second = second + 1; (b) if (number 100) printf(“out of range”); else if (number 200) printf(“admitted”); else if (M 60) if (M 60) printf(“admitted”); else printf(“not admitted”); 5.6 F T F T 5.8 (a) x 10 (b) (x != 10)|(y ! = 5) | (z = 0) (c) (x
3、+ y != z) | (z 5) (d) (x 5) | (y != 10) | (z = 5) 5.9 (a) x = 5; y = 10; z = 1 (b) x = 5; y = 10; z = 1 (c) x = 5; y = 0; z =0 (d) 无变化 5.10 （a） x= 0; y = 2; z = 0; (b) x = 1; y = 2; z = 0; 5.12 8 5.13 Delhi Bangalore END 5.14 2 4 4 8 5.15 0 0 2 5.16 25 5.17 Number is negative 5.18 ABC 5.19 10 5.20 无
4、输出 Chapter 6 6.1 6.2 n continue infinite indefinite-repetition-loop counter-variable 6.9 （a） 43210 (b)4321 (c)5555555555(d)10 8 6.11 （a）无数次 x = 10; x = 5; x = 10; x = 5; x = 10; (b)5次 m = 3, m = 5, m = 7, m = 9, m = 11 (c)无数次, i 恒为0 (d)4次 m = 11 n = 9; m = 12 n = 11; m = 13, n = 13; m = 14, n = 15;
5、6.13 （a）for (n = 1; n = 32; n = n * 2) printf(%d , n); （b）for (n = 1; n = 243; n = n * 3) printf(%d , n); （c）for (n = -4; n = 4; n = n + 2) printf(%d , n); (d)sum = 0; for (i = 2; i = 16; i = sum) sum = sum + i; n = n - i; printf(%d %d %d n, i, sum, n); 6.16 100 90 80 70 60 50 40 30 20 10 0 6.17 m =
6、 20时陷入死循环，程序无输出 6.18 1 6.19 1 6.20 死循环，延长时间用 Chapter 7 7.1 7.2 index/subscript run-time dynamic multi-dimensional sorting 7.14 15 7.15 HLOWRD Chapter 8 8.1 8.2 % a-z,A-Z strcpy 3 stdlib gets strlen strstr strcmp s1-s2 puts 8.6 (a) The sky is the limit. (b) The sky is (c) T (d) The sky is the limit (
7、e)84 104 101 32 115 107 121 32 105 115 32 116 104 101 32 108 105 109 105 116 (f)输出1 2 3 4 5 6 7 8 921这些ASCII码对应的字符，无显示符号 (g)% (h)U 8.7 (d) 8.8 7 8.9 (a)he(b)heorshe(c)5 7 8.11 pune Chapter 9 9.1 9.2 actual-parameter local-variable int data-type variable-name scope recursive static type auto 9.8 abceg 9.9 abcdeg 9.12 (a) 5 (b) 4 (c)3 (d)0 9.13 (a) 5 4 4 0 (b) 5.0 4.0 3.0 0.67 9.14 题目错，设z = 5；结果为：200 1000 9.15 100 9.16 x = 3; y = 0 Chapter 10 10.1 10.2 typedef union tag_name pointer member Chapter 11 11.1 11.2 address * * 0 null