参考答案 C语言程序设计 第二版 (丁亚涛 著) 高等教育.pdf

参考答案参考答案 习题二习题二 P33 一 单选题 1 C2 B3 D4 C5 A6 D7 D8 B9 B10 D11 D12 C13 C 15 A 14 题最后一句应为 printf f n d y 结果为 2 2 二 填空题 1 182 intfloatdouble3 10114 八十六十5 三 阅读程序题 1 10 10 9 10 2 j 1 i 2 k 3 i 3 j 3 i 2 k 1 i 1 习题三习题三 P52 一 单选题 1 D2 C3 D4 B5 A6 B7 C8 A9 C10 B11 1 37777777777 4294967295 二 填空题 5 L6 1 三 阅读程序题 1 66 6 00 6 00 2 x 127 x 127 x 177 x 7f Y 123 4567 y 123 46 y 123 45670 3 2 1 4 1234 5 4 3 6 6 6 四 程序设计题 1 include stdio h include math h main float a b c d x1 x2 a 2 b 3 c 5 d b b 4 a c x1 b sqrt d 2 a x2 b sqrt d 2 a printf x1 2f x2 2f n x1 x2 2 include main w w w k h d a w c o m 课后答案网 float a v s scanf f v a a a s 6 a a printf v 2f s 2f n v s 3 include main int a b c t scanf d d d printf a d b d c d n a b c t c c b b a a t printf a d b d c d n a b c 4 include main char s1 s2 s1 getchar s2 s1 32 printf c n s2 习题四习题四 P70 一 单选题 1 C2 D3 D4 B5 A6 D7 D8 B9 C10 A11 B12 D13 passwarnerror 14 C15 C16 B17 B18 C 二 填空题 1 非 002 k 03 n 7 0 char c printf INPUTA B n scanf d c d switch c case printf d d d n a b a b break case printf d d d n a b a b break case printf d d d n a b a b break w w w k h d a w c o m 课后答案网 case printf d d d n a b a b break default printf INPUT ERROR 2 include main float x y scanf f if x 0 x 2 y 0 else if x 0 y x 1 x 2 else y x 1 x 2 printf y f n y 3 include main int g printf 请输入学生成绩 scanf d printf g d g switch g 10 case 10 printf A n break case 9 printf B n break case 8 printf C n break case 7 printf D n break case 6 printf E n break default printf F n 4 include main int x n 0 scanf d if x 10000 printf Data Error n else if x 10 n 1 else if x 100 n 2 else if x 1000 n 3 else n 4 w w w k h d a w c o m 课后答案网 printf n d n n 习题五习题五 P87 一 单选题 1 B2 D3 C4 C5 B6 C7 D8 C9 A10 D11 B12 B13 B14 D15 C 二 填空题 1 for 语句while 语句do while 语句 2 a 14 y 26 3 k 14 n 1 4 39 5 s 19 6 22222 7 10 8 7 9 8 10 5 5 三 改错题 应改为 for i 0 i 5 i j 应改为 int j 0 while j 10 j i j 注 while j 10 后不应有分号 应改为 while j 10 注 while j 10 后分号不能少 s i i 应改为 s i i continue 应改为 break 四 程序设计题 1 include main int i j s 0 for i 1 j 1 i 100 i j j 1 s s i j printf s d n s 1 另一做法 include main int i s for i 1 s 0 i 100 i if i 2 0 s s i else s s i printf d n s w w w k h d a w c o m 课后答案网 2 include main int i j s1 0 s2 0 for i 0 i0 s1 s1 j else s2 s2 j printf s1 d s2 d n s1 s2 3 include main int i s for i 6 s 0 i 96 i i 1 if i 10 6 i 10 6 s s i printf d n s 4 include main int i a b c for i 100 i 999 i a i 10 b i 10 10 c i 100 if i a a a b b b c c c printf d n i 5 include main int i j k 0 for i 1 i 4 i for j 1 j i j k printf d k 10 printf n w w w k h d a w c o m 课后答案网 6 include main int i j k 0 for i 3 i 3 i if i 0 k i else k i for j 1 j k j printf for j 1 j 7 2 k j printf printf n 习题六习题六 P111 一 单选题 1 D2 B3 C4 C5 C6 D7 A8 B 二 填空题 1 20019 2 数组名 3 越界 4 6 5 j ka j k 1 a j k 0 三 阅读程序题 1 654 321 2 aaa bbb ccc ddd 3 2 2 1 四 程序设计题 1 include main int a 4 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 int i j s 0 for i 0 i 4 i for j 0 j 4 j if i j i j 3 s a i j printf d s 2 include w w w k h d a w c o m 课后答案网 main char a 80 int i j 5 假设删除位置为 5 gets a for i j 1 a i 0 i a i a i 1 a i 0 puts a 3 include include main char a 80 int i j 5 假设插入位置为 5 char s t 假设插入字符为 t gets a for i strlen a i j i a i 1 a i a j t puts a 4 include main int a 3 5 1 3 5 7 9 2 4 6 8 10 3 5 8 7 6 int i j s1 3 0 s2 5 0 for i 0 i 3 i for j 0 j 5 j s1 i a i j for i 0 i 5 i for j 0 j 3 j s2 i a j i for i 0 i 3 i for j 0 j 5 j printf 6d a i j printf 6d n s1 i for i 0 i 33 i printf printf n for i 0 i 5 i printf 6d s2 i printf n 5 include w w w k h d a w c o m 课后答案网 main char s 3 80 int a 0 b 0 c 0 d 0 e 0 i j for i 0 i 3 i gets s i for i 0 i A else if s i j 32 d else e printf 3d 3d 3d 3d 3d a b c d e 习题七习题七 P145 一 单选题 1 A2 B3 C4 A5 C6 D7 C8 B9 B10 C11 D 二 填空题 1 该函数内局部 2 整型 3 k b return y 4 x i return ave fun a 20 5 1 add n 1 add n 6 n f n 1 0 f i 三 阅读程序 写出运行结果 1 10 20 30 2 64 3 8 4 hlo 5 sum 55 四 程序设计题 1 include main float add float float sub float float float aver float float a b w w w k h d a w c o m 课后答案网 scanf f f printf add f sub f n add a b sub a b printf aver f aver a b float add float x float y return x y float sub float x float y return x y float aver float x float y return x y 2 2 include main int a b c abmax int int scanf d d d printf max d n abmax abmax a b c int abmax int a int b if a b return a else return b 3 include main float x fun float int int n scanf f d printf f n fun x n float fun float x int n float y if n 0 y 1 else y x fun x n 1 return y 4 include main long f int int n k scanf d for k 1 k n k printf ld f k printf n long f int n long y if n 2 y 1 w w w k h d a w c o m 课后答案网 else y f n 1 f n 2 return y 5 include include main char a 50 int n void fun char x int n gets a n strlen a fun a n puts a void fun char a int n int k s for k 0 k n 2 k s a k a k a n k 1 a n k 1 s 5 另一做法 include include main char a 50 int n void fun char x int n gets a n strlen a fun a n puts a void fun char a int n int k char b 50 for k 0 k n k b n 1 k a k b k a k strcpy a b 6 include define KK 100 main w w w k h d a w c o m 课后答案网 char a KK long sjz char a int i 0 f1 0 printf input a data gets a for i 0 a i 0 i if a i 0 return n 6 另一做法 include define KK 100 main char str KK c long sjz char a int i 0 f1 0 printf input a data while c getchar n p a for q a q a 10 q scanf d q for q a q a 10 q printf 5d q printf n q for p q p q t p p q q t for p a p a 10 p printf 5d p printf n 2 include w w w k h d a w c o m 课后答案网 include void main char a 50 p1 p2 t n gets a n strlen a p1 a p2 a n 1 for p1 p2 p1 p2 t p1 p1 p2 p2 t puts a 另一做法 include main char str 20 p str gets str while p p p while p str printf c p p printf n 3 include main int a 10 p max min t for p a p a 10 p scanf d p for p a p a 10 p printf 5d p printf