c语言程序设计案例教程廖湖声课后答案.pdf

1 1 P35 6 include main double r s v printf Please Enter radius scanf lf v 4 0 3 3 14 r r r s 4 3 14 r r printf V lf n v printf S lf n s getch 2 P59 4 C include main int y printf Please enter a year scanf d if y 4 0 else printf It is not a leap year n getch P59 5 C include main int year month day printf Please enter a year and a month scanf d d switch month case 1 case 3 case 5 case 7 case 8 case 10 case 12 day 31 break case 4 case 6 case 9 case 11 day 30 break case 2 if year 400 0 year 4 0 else day 28 printf It has d days n day getch P59 6 C include main int x i sum 0 n 0 printf nEnter 10 integer number n for i 1 i 10 i scanf d if x 2 0 sum sum x n printf 2f n 1 0 sum n getch P59 7 C include main 2 int c inWord inWord 0 while c getchar n if c a else inWord 0 putchar c getch P59 8 C include main int i m n printf Please Enter two integers scanf d d for i 1 i n i if i m n 0 break printf lcd d n i m getch P59 10 C include main int len1 len2 inWord char c inWord 0 len1 len2 0 do c getchar if c a len1 len2 len2 0 len2 else if inWord inWord 0 while c n printf d n len1 getch P61 1 C include main int i x max min printf Enter x scanf d max x min x for i 1 imax max x if x min min x printf max d min d n max min getch P61 2 C include main int a b c n 3 a 0 b 1 printf 6d a printf 6d b for n 3 n 20 n c a b printf 6d c if n 5 0 printf n a b b c getch 3 P77 1 C include main int x n 0 i flag for x 2 x 100 x flag 1 for i 2 i x i if x i 0 flag 0 break if flag printf 5d x n if n 5 0 printf n getch P77 2 C include main int x i printf nEnter an integer number 0 scanf d for i 1 i x i if x i 0 printf 4d i getch P77 3 C include main int n n 10 while 1 if n 5 1 n printf nnum 5d n getch P77 4a include main int x a b c for a 1 a 9 a for b 0 b 9 b for c 0 c 9 c if a a a b b b c c c a 100 b 10 c printf n 5d a 100 b 10 c getch P77 4b include main int x a b c for x 100 x 999 x 4 a x 10 b x 10 10 c x 100 if a a a b b b c c c x printf n 5d x getch P77 5 include main long s 0 int x for x 1 x 99 x 2 s s x x 1 x 2 printf n ld s getch P77 6 include main long t s 0 int i a n printf Please Enter two integers a n scanf d d t a for i 1 i n i s s t t t 10 a printf a aa aaa ld s getch P77 7 include stdio h main int x i x 1 for i 1 i 9 i x x 1 2 printf nx d x getch P78 2 include include main int sign 1 long j 1 double item sum 1 0 do j item sign 1 0 j sum item sign sign while fabs item 1e 4 printf n1 1 2 1 3 lf sum getch P79 1 include main int x 100 i k for i 2 i x i if x i 0 for k 2 k i k if i k 0 break if k i printf 3d i 5 getch P79 2 include main double sum 0 0 long i 0 j double item 1 0 while fabs item 1e 6 sum sum item i item 1 0 i i 1 printf nsum lf sum getch 4 P121 4 C include include define num 100 main int i data num randomize for i 0 i num i data i random 100 printf 4d data i for i 0 i num i if data i 2 0 data i 1 data i printf n for i 0 i num i printf 4d data i getch P121 5 C include include define NUM 100 main int i key data NUM flag 0 randomize for i 0 i NUM i data i random 100 printf 4d data i printf nPlease enter a key number scanf d for i 0 i NUM i if data i key printf The key is at d n i flag 1 if flag 0 printf It can not be found n getch P121 6 include define NUM 5 define M 12 main int i yue month NUM count M 0 printf Please Enter d month NUM for i 0 i NUM i scanf d if month i 12 printf It is a error Please again i 6 continue for i 0 i NUM i count month i 1 1 for i 0 i M i printf The d d n i 1 count i getch P121 7 include include main char s 100 int max 0 i n a 0 int white 1 printf nEnter gets s i 0 while 1 switch s i case case t case 0 if white 0 n i a if max n max n white 1 break default if white white 0 a i if s i 0 break i printf d n max getch P121 7a include include main char s 100 int max 0 i n 0 printf nEnter gets s for i 0 i strlen s i if s i n if s i s i 1 0 if max n max n n 0 printf d n max getch P121 8 include main char str 33 int i flag 0 printf nEnter a string gets str for i 0 str i 0 i if str i 0 flag 1 break else printf String error flag 1 7 break if flag 0 printf String right getch P121 9 include main int a 6 6 i j for i 0 i 6 i for j 0 j i j if i j a i j 1 else if i j 1 a i j a j i 2 else if i j 2 a i j a j i 3 else a i j a j i 0 for i 0 i 6 i for j 0 j 6 j printf 4d a i j printf n getch P121 10 include define M 3 define N 4 main int s M N b M float a M p int i j k t sum for i 0 i M i for j 0 j N j printf Enter Student d Score d i 1 j 1 scanf d for i 0 i M i sum 0 for j 0 j N j sum s i j a i 1 0 sum N b i i for i 0 i M 1 i k i for j i 1 j M j if a k a j k j if k i p a i a i a k a k p t b i b i b k b k t for i 0 i M i printf Student d Average 2f n b i 1 a i getch P124 1 include define N 10 main int a N int i j k t int m for i 0 i N i printf a d i scanf d printf Enter m scanf d for i 0 i m i k i 8 for j i 1 ja j k j if k i t a i a i a k a k t for i 0 i m i printf 5d a i getch P124 2 include include main char s 80 p date 80 int k printf Enter string gets s p strtok s k atoi p switch k case 1 strcpy date Jan break case 2 strcpy date Feb break case 3 strcpy date Mar break case 4 strcpy date Apr break case 5 strcpy date May break case 6 strcpy date Jun break case 7 strcpy date Jul break case 8 strcpy date Aug break case 9 strcpy date Sep break case 10 strcpy date Oct break case 11 strcpy date Nov break case 12 strcpy date Dec break p strtok NULL strcat date p strcat date p strtok NULL strcat date p printf s date getch 5 P159 4 include int isPrime int x main int n 0 i for i 2 i 1000 i if isPrime i 1 printf 5d i n if n 8 0 printf n getch int isPrime int x int m for m 2 m x m if x m 0 return 0 return 1 P159 5 include void tranc char s main char t 20 printf Enter a string gets t 9 tranc t puts t getch void tranc char s int i 0 while s i 0 if s i A i P159 6 long Mul int n int i long s 0 for i 1 i n i s s i i 1 return s P160 7 C include int HexToDecimal char hex main char str 10 long n printf Please Enter a Hex scanf s str n HexToDecimal str printf n ld n n getch int HexToDecimal char hex int n 0 i 0 while hex i 0 if hex i 0 else break i return n P160 9 include main int a printf Enter a integer scanf d a reverse a printf d n a getch int reverse int value int a n 1 a value while a 10 n n 10 a a 10 if value 10 0 return value else 10 return value 10 n reverse value 10 P160 10 include int count int a int num int search int a int num int result 返回 能被 3 整除的数的个数 main int a 15 2 3 4 5 6 7 8 9 10 int i k b 10 printf nThe number is d n count a 10 k search a 10 b for i 0 i k i printf 3d b i getch int count int a int num int i n 0 for i 0 i num i if a i 5 0 n return n int search int a int num int result int i n 0 for i 0 i num i if a i 3 0 result n a i n return n P160 11 include int average int score int n int search int score int num int n int NO int morethan300 int score int num int n int result main int nums 1 3 6 7 9 int scores 450 200 600 500 380 int a s int i k r 5 a average scores 5 printf nAverage is d n a s search scores nums 5 3 例查找 3 号 的成绩 printf nScore d n s k morethan300 scores nums 5 r for i 0 i k i printf 4d r i getch int average int score int n int i sum 0 for i 0 i n i sum score i return sum n int search int score int num int n int NO int i for i 0 i n i 11 if num i NO break if i n return score i else return 1 不存在返回 1 int morethan300 int score int num int n int result int i count 0 for i 0 i300 result count num i count return count P160 12 include include main char line 80 result 80 gets line while line 0 0 if strstr line your sincerely strcpy result line gets line puts result getch P162 1 include long fact int main int m n float Amn printf Enter m n m n scanf d d Amn 1 0 fact m fact m n printf f Amn getch long fact int n int i long result 1L for i 1 i n i result i return result P162 2 include long fact int void toBinary int value int binary main int dec binary 16 0 i printf Enter a integer scanf d toBinary dec binary for i 15 i 0 i printf d binary i getch void toBinary int value int binary int i 0 while value 0 12 binary i value 2 value value 2 i 6 P227 5 C include define N 5 struct employ int no char name 20 int salary main struct employ s N int i sum 0 for i 0 i N i printf NO scanf d printf input name scanf s s i name printf salary scanf d sum sum s i salary printf Average d n sum N for i 0 i N i if s i salary 300 printf d s d n s i no s i name s i salary getch P227 6 include include define N 5 void Computing double src int n double tag int pmax int pmin main double a N 25 3600 81 100 16 double r N int i max min Computing a N r for i 0 i N i printf 2lf r i printf n d d n max min getch void Computing double src int n double tag int pmax int pmin int i pmax pmin 0 for i 0 i n i tag i sqrt src i if src pmax src i pmin i P227 7 include define N 5 double getPart double src int n double x1 double x2 int p main double a N 2 5 3 7 1 6 9 5 4 7 double b 13 int i n 0 b getPart a N 8 0 3 5 例找 3 5 与 8 0 之间的数 printf n for i 0 i n i printf 2lf b i getch double getPart double src int n double x1 double x2 int p int i double new t for i 0 ix2 计算符合要求的数的个数 new double malloc p malloc sizeof double t new for i 0 ix2 return new P228 8 C include int delSpace char s main char s 20 int k printf Enter a string gets s puts s k delSpace s puts s printf d n k getch int delSpace char s int i 0 j 0 while s i 0 if s i s j s i j i s j 0 return i j P228 9 include char divString char src main char s abc123ABCdDEFef char r r divString s puts s puts r getch char divString char src int i 0 j 0 k 0 char t 14 t char malloc strlen src sizeof char while src i 0 if src i a k else src j src i j i src j 0 t k 0 return t P228 10a include include int lookup char src 5 10 int n char tag 5 10 main char s 5 10 LiuLi ZhangSan liuliu LiSi WangWu char result 5 10 int i num 0 num lookup s 5 result for i 0 i num i puts result i getch int lookup char src 5 10 int n char tag 5 10 int i k 0 char t 4 0 for i 0 i n i t 0 src i 0 t 1 src i 1 t 2 src i 2 if stricmp t liu 0 strcpy tag k src i return k P228 10b include include int lookup char src 10 int n char tag 10 main char s 5 10 LiuLi ZhangSan liuliu LiSi WangWu char result 5 10 int i num 0 num lookup s 5 result for i 0 i num i puts result i getch int lookup char src 10 int n char tag 10 int i k 0 char t 4 0 for i 0 i n i t 0 src i 0 t 1 src i 1 t 2 src i 2 15 if stricmp t liu 0 strcpy tag k src i return k P228 11 12 13 C include typedef struct node int data struct node next NODE NODE creat int isorder NODE h void print NODE h int reNth NODE h int n main NODE h h creat print h if isorder h 1 printf order n else printf Disorder printf n d reNth h 5 getch int isorder NODE h NODE p if h NULL return 1 while h next NULL p h next if p datadata return 0 h h next return 1 NODE creat int x NODE q p NULL head NULL printf nEnter scanf d while x 0 q NODE malloc sizeof NODE q data x if head NULL head q else p next q p q scanf d p next NULL return head void print NODE h while h NULL printf d h data h h next int reNth NODE h int n NODE p q p q h while p next NULL q p p p next if n 1 16 return p data else if p q return 1 else q next NULL free p reNth h n 1 P228 14 C include int isPrime int x main int n 0 i x FILE fp if fp fopen c aa txt w NULL printf nCannot open the file return 1 for i 2 i 1000 i if isPrime i 1 fprintf fp 5d n i fclose fp if fp fopen c aa txt r NULL printf nCannot open the file return 1 fscanf fp d while feof fp printf 5d x n if n 10 0 printf n fscanf fp d fclose fp getch int isPrime int x int m for m 2 m x m if x m 0 return 0 return 1 P228 15 C include define N 5 typedef struct employ int no char name 20 int salary EMPLOY main EMPLOY s N r N int i j 0