C語言程序設(shè)計(jì)習(xí)題集沈國榮-參考答案

1、C 語言程序設(shè)計(jì)習(xí)題解答沈國榮 隋雪莉 閔芳目錄第 1 章 C 語言程序設(shè)計(jì)概述 錯(cuò)誤!未定義書簽。第 2 章 數(shù)據(jù)類型及其運(yùn)算 錯(cuò)誤!未定義書簽。第 3 章 語句與輸入輸出 錯(cuò)誤!未定義書簽。第 4 章 選擇結(jié)構(gòu)程序設(shè)計(jì) 錯(cuò)誤!未定義書簽。第 5 章 循環(huán)結(jié)構(gòu)程序設(shè)計(jì) 錯(cuò)誤!未定義書簽。第 6 章 數(shù)組 錯(cuò)誤!未定義書簽。第 7 章 函數(shù) 錯(cuò)誤!未定義書簽。第 8 章 編譯預(yù)處理 錯(cuò)誤!未定義書簽。第 9 章 指針 錯(cuò)誤!未定義書簽。第 10章 結(jié)構(gòu)體與共用體 錯(cuò)誤!未定義書簽。第 11 章 位運(yùn)算 錯(cuò)誤!未定義書簽。第 12 章 文件操作 錯(cuò)誤!未定義書簽。第1章C語言程序設(shè)計(jì)概述一、選擇

2、題12345678910CBACCBDBDA二、填空題1. 函數(shù)、main()函數(shù)2. /*、*/3. .C、.OBJ、.EXE4. 順序結(jié)構(gòu)、選擇結(jié)構(gòu)、循環(huán)結(jié)構(gòu)三、編程題1 .【參考代碼】#include<>int main()printf("(學(xué)校名稱)n");printf("(姓名)n");return 0 ;2 .【參考代碼】#include<>int main()printf("(學(xué)校名稱)n (姓名)n");return 0 ;第2章數(shù)據(jù)類型及其運(yùn)算、選擇題12345678910CCCABADDC、

3、BB11121314151617181920CADDDCDC注：第5題B選項(xiàng)為：'' '017' 't'二、填空題1. 字母、數(shù)字、下劃線2. 1、 4、 4、 83. -164.5. 06. 97. 68. -609. y%2=110. 1、0、1三、程序閱讀題1. b2. 03. 04. 10,25. 9,10,9,106. 3,1,0,07. 3,20,30,1第3章語句與輸入輸由、選擇題12345678910BCCCCBBBDA二、填空題1.2. D3. 回車4. 10,2三、程序閱讀題1. 2612. 203. 201,104. y=4

4、630y=46305. *,*6. c:dec=120,oct=170,hex=78,ASCII=x7. x=1 y=2 *sum*=310 squared is : 1008. 2 489. x+y+z=4810. 55, ,A四、編程題1 .【參考代碼】#include<>int main()char ch;printf("請輸入一個(gè)字符：n");scanf("%c",&ch);printf("%c 的 ASCII 碼為：dn", ch,ch); return 0 ;2 .【參考代碼】#include<&

5、gt;#define PIint main()double r, h;double cl,cs,cv;printf（" 請輸入圓的半徑： "）;scanf（"%lf", &r）;printf（" 請輸入圓柱高： "）;scanf（"%lf", &h）;cl=2*PI*r;cs=PI*r*r;cv=PI*r*r*h;printf（"圓的周長為：%.4lfn", cl）;printf（"圓的面積為：%.4lfn", cs）;printf（" 圓柱的體積為

6、： %.4lfn", cv）;return 0 ;3 . 【參考代碼】#include<>int main（ ）int splitInt,one,ten,hundred;printf（" 輸入要處理的整數(shù)： "）;scanf（"%d",&splitInt）;hundred = splitInt/100;ten = splitInt%100/10;one = splitInt%10;printf（" 個(gè)位：d,十位：d,百位：dn",one,ten,hundred）;return 0 ;第4章選擇結(jié)構(gòu)程序設(shè)

7、計(jì)、選擇題123456DCCBBD二、程序閱讀題1. io2. 2,2,23. 64. 97,b5. c=-16. 88887. 20,08. 2,19. 1,12,22,1-2,210. a=1,b=3三、程序完善題1. a>b、 c>x四、編程題2. 【參考代碼】#include<>int main()int a, b, c,d,min;printf(" 輸入4個(gè)整數(shù)：");scanf("%d%d%d%d",&a,&b,&c,&d);if(a < b) min = a;else min =

8、 b;if(c < min) min=c;if(d<min) min=d;printf("%d'n",min);return 0 ;3. 【參考代碼】#include<>int main()int num,a,b,c,d;printf("請輸入一個(gè)四位整數(shù)：");scanf("%d",&num);a=num/1000;b=num%1000/100;c=num%100/10;d=num%10;printf(" 各位數(shù)字之和為： %dn",a+b+c+d);return 0 ;4

9、. 【參考代碼】#include<>int main( )int x;printf(" 請輸入 x ： ");scanf("%d",&x);printf("y 的值為： ");if(x<0)printf("%dn",x);else if(x<50)printf("%dn",3*x-2);else if(x<100)printf("%dn",4*x+1);elseprintf("%dn",5*x);return 0 ;5

10、. 【參考代碼】#include<>int main( )int dj;float zl,je,yfk;printf(" 請輸入等級( 14) : ");scanf("%d",&dj);if (dj>4|dj<1)printf(" 無此等級的蘋果！ n");return 0;printf(" 請輸入重量(公斤) : ");scanf("%f",&zl);printf("n");switch (dj)case 1 : je=*zl; br

11、eak;case 2 : je=*zl; break;case 3 : je=*zl; break;case 4 : je=*zl; break;printf（"您選擇蘋果級別: %d 級 n",dj）;printf（"您購買蘋果重量: %.2f 公斤 n",zl）;printf（"您應(yīng)付金額為：.2f 元n",je）;printf（"n"）;printf（" 顧客所付金額: "）;scanf（"%f",&yfk）;if （yfk<je）printf（"

12、;Data Error!n"）;return 0;printf（"應(yīng)找您：.2f 元n",yfk-je）;return 0 ;第5章循環(huán)結(jié)構(gòu)程序設(shè)計(jì)、選擇題12345678(1)8(2)91011CBBBABBBCDCB二、程序閱讀題1. 1,2,02. . m=4,n=23. A2C4E64. 1325. 46. k=0,m=57. x=88.9. 998988三、程序完善題1. ( ch > 'Z' && ch <= 'Z' + 4 ) |(ch > 'z' )ch - 262.

13、 k k/10continue3. i + t *10 s = s + t4. fabs( t ) >= 1e-6 f = -f5. i<10j%3 !=0四、編程題1 .【參考代碼】#include<>int main()int n , i , j , k ;printf( "Output : n");for(n = 100 ; n < 1000 ; n+ )1 = n % 10 ; /* 個(gè)位 */j = ( n / 10 ) % 10 ; /*十位 */k = n / 100 ; /* 百位 */if ( n = i * i * i +

14、j * j * j + k * k * k ) printf( "%dn" , n );return 0 ;2 .【參考代碼】#include<>int main ()int i , m , n , t , p , k ;printf( "Please input: " ) ;scanf ( "%d,%d" , &m , &n ) ;if( m < n )t = n ;n = m ;m = t ;p = m * n ;while ( n != 0 ) /*余數(shù)不為 0 ，繼續(xù)相除，直到余數(shù)為 0 */

15、1 = m % n ;m = n ;n = i ;k = p / m ;printf( "%d,%dn" , m , k );return 0 ;3 . 【參考代碼】#include<>int main( )int i , n , t , sum ;t = 1 ;sum = 0 ;printf( "Please input: n = " ) ;scanf( "%d" , &n ) ;for( i = 1 ; i <= n ; i+ )t = t * i ;sum = sum + t ;printf( &quo

16、t;1!+2!+%d!= %d n" , n , sum );return 0 ;4 . 【參考代碼】#include<>int main( )int i , m ;double sum = 0 , k = 1 ;printf( "Please input : m=" ) ;scanf( "%d" , &m ) ;for( i = 1 ; i <= m ; i+ )sum = sum + k / i ;k = -k ;printf( "sum=%4.2fn" , sum ) ;return 0 ;第

17、6章數(shù)組、選擇題12345678910111213141516DDDBCCBCCDDBDDCD、程序閱讀題1 82 43 0,24 125 t*M6 mo7 fwo三、程序完善題1 k = ij = iak = max aj = min2 sum += scorei scorei<avg 3 si = si + aij printf( "n");4 j = strlen( str )- 1 strj = k5 ( c = getchar( ) ) != '#' numc-'A' += 1 四、編程題1. 【參考代碼】#include&l

18、t;>#define N 5 int main() int aN , i , j , r , temp ;printf( "Please input %d numbersn" , N );for( i = 0 ; i < N ; i+ ) scanf( "%d” , &ai);for( i = 0 ; i < N - 1 ; i+ ) r = i ;for( j = i + 1 ; j < N ; j+ ) if( aj < ar)r = j ； if( r != i ) temp = ar;ar = ai； ai = tem

19、p ;printf( "The array after sort:n" ) ;for( i = 0 ; i < N ; i+ )printf( "%5d" , ai ) ;printf( "n" ) ;return 0 ;2. 【參考代碼】#include<>int main( )int a10 = 1 , 2 , 3 , 6 , 7 , 8 , 9 , 10 ;int x , j , k = 0 ;printf( "Please input :x= " ) ;scanf( "%d&qu

20、ot; , &x) ;if( x > a7 )a8 = x ;elsefor( j = 0 ; j < 8 ; j+ )if( x < aj )break ;for(k = 8 ; k > j ; k- )ak = ak - 1 ;aj = x ;for( j = 0 ; j < 9 ; j+ )printf( "%5d" , aj ) ;printf( "n" ) ;return 0 ;3. 【參考代碼】#include<>int main( )int a55= 0,1,2,3,4,5,6,7,8,9,

21、10,11,12,13,14,15,16,17,18,19,20,21,22,23,24 ;int i , j ,sum = 0 ;for ( i = 0 ; i < 5 ; i+ )for ( j = 0 ; j < 5 ; j+)printf( "%4d" , aij ) ;printf( "n" ) ;for( i =0 ;i < 5 ; i+ )sum += aii ;printf( " sum=%4dn" , sum ) ;return 0 ;4. 【參考代碼】#include<>int mai

22、n( )char s1100 , s230 ;int i , j ;printf( "Please input s1:" ) ;gets( s1 ) ;printf( "Please input s2:" ) ;gets( s2 ) ;for( i = 0 ; s1i != '0' ; i+ ) ;for( j = 0 ; s2j != '0' ; j+ , i+ )s1i = s2j ;s1i = '0' ;printf( "Outputns1:" ) ;puts( s1 ) ;ret

23、urn 0 ;5. 【參考代碼】#include<>int main( )char s1100 ;int i ;printf( "Please input s1:" ) ;gets( s1 ) ;for( i = 0 ; s1i != '0' ; i+ ) ;printf( "The length of s1 is %dn" ,i ) ;return 0 ;第7章函數(shù)、選擇題123456789101112131415BDDABBCBDDAADDA、程序閱讀題1 max is 22 a=1,b=23 1 114a=11,b=12

24、,c=25 66 7 8 97 8 178 0 1 2 0 1 2三、程序完善題1 float area ( float r ) return s2 z = fun( x , y )z = z * x3 count =fun( score ) count+四、編程題4 .【參考代碼】#include<>int main()void f(int n);int n ;printf( "Please input: n=");scanf( "%d" , &n );if( n <= 0)printf( "Wrong number

25、!n");elsef( n )；return 0 ;void f(int n)if( n % 2 = 1 )printf( "%d is a odd number.n" , n );elseprintf( "%d is a even number.n" , n );5 .【參考代碼】 #include < >#include < >int main( )void f( int m ) ;int m ;printf( "Please input: m= " ) ;scanf( "%d"

26、; , &m ) ;f( m ) ;return 0 ;void f( int m )int i , k ;k = sqrt( m );for(i = 2 ; i <= k ; i+ )if( m % i = 0 ) break;if (i >= k + 1 )printf( "%d is a Prime Number.n" , m ) ;elseprintf( "%d is not a Prime Number.n" , m ) ;6 . 【參考代碼】#include<>int gys( int m , int n )i

27、nt r ;r = m % n ;while( r != 0 )m = n ;n = r ;r = m % n ;return n ;int gbs( int m , int n , int r )return m * n / r ;int main( )int m , n , t ;printf( "Please input(m,n)scanf( "%d%d" , &m , &n ) ;if( m < n )t = m ;m = n ;n = t ;t = gys( m , n ) ;printf( "gys=%dn"

28、, t ) ;t = gbs( m , n , t ) ;printf( "gbs=%dn" , t ) ;return 0 ;7 . 【參考代碼】#include<>int main( )void mystrcat( char s1100 , char s230 ) ;char s1100 , s230 ;printf( "Please input s1:" ) ;gets( s1 ) ;printf( "Please input s2:" ) ;gets( s2 ) ;mystrcat( s1 , s2 ) ;prin

29、tf( "Outputns1:" ) ;puts( s1 ) ;return 0 ;void mystrcat( char s1100 , char s230 )int i , j ;for( i = 0 ; s1i != '0' ; i+ ) ;for( j = 0 ; s2j != '0' ; j+ , i+ )s1i = s2j ;s1i = '0' ;第8章編譯預(yù)處理、選擇題123456ADDABA二、程序閱讀題1 6,182 153 5第9章指針、選擇題123456789101112DBBCDCCCDBCC13141

30、51617CDDAC二、填空題1. 地址，NULL (或 0)2. . char a, *p;, scanf("%c", &a);, p=&a;3. *m4. for( k=0; k<10; k+ )5. *(P+i), pi , *(x+i)6. stri 或 *( str + i ), i三、程序閱讀題1. gae2. bcdABCD3. 7, 8, 84. 8 45. 3 14 26. efgh7. w,one8. 7四、程序完善題1. ai 或 *( a + i )2. *p!='0'*p-'0'3. p1p2-

31、x4. max(int a , int b ); p = max四、編程題1 .【參考代碼】#include<>void sort( int *a , int *b , int *c );int main()int m , n , t ;printf( "Please input(m n t):");scanf( "%d%d%d" , &m , &n , &t );sort( &m , &n , &t );printf( "The result is :%dt%dt%dn"

32、, m , n , t );return 0 ;void sort( int *a , int *b , int *c )int temp ;if( *a > *b ) temp = *a ; *a = *b ; *b = temp ; if( *a > *c ) temp = *a ; *a = *c ; *c = temp ; if( *b > *c ) temp = *b ; *b = *c ; *c = temp ; 2 . 【參考代碼】程序 1:#include <>int strcompare( char *str1 , char *str2 );in

33、t main( )int m ;char s120 , s220 , *p1 , *p2 ;printf( "Please input(string1):" ) ;scanf( "%s" , s1 ) ;printf( "Please input(string2):" ) ;scanf( "%s" , s2 ) ;m = strcompare ( s1 , s2 ) ;printf( "The result of strcompare is: %dn" , m ) ;return 0 ;int

34、strcompare( char *str1 , char *str2 )int i = 0 ;while( ( *( str1 + i ) = *( str2 + i ) ) &&( *( str1 + i ) != '0' ) ) i+ ;return( *( str1 + i ) - *( str2 + i ) ) ;程序 2:#include <>int strcompare( char *str1 , char *str2 );int main( )int m ;char s120 , s220 , *p1 , *p2 ;printf( &

35、quot;Please input(string1):" ) ;scanf( "%s" , s1 ) ;printf( "Please input(string2):" ) ;scanf( "%s" , s2 ) ;p1 = s1 ;p2 = s2 ;m = strcompare ( p1 , p2 ) ;printf( "The result of strcompare is: %dn" , m ) ;return 0 ;int strcompare( char *str1 , char *str2 )

36、int i = 0 ;while( ( *( str1 + i ) = *( str2 + i ) ) &&( *( str1 + i ) != '0' ) ) i+ ;return( *( str1 + i ) - *( str2 + i ) ) ;程序 3:#include <>int strcompare( char str1 , char str2 );int main( )int m ;char s120 , s220 , *p1 , *p2 ;printf( "Please input(string1):" ) ;sc

37、anf( "%s" , s1 ) ;printf( "Please input(string2):" ) ;scanf( "%s" , s2 ) ;p1 = s1 ;p2 = s2 ;m = strcompare ( p1 , p2 ) ;printf( "The result of strcompare is: %dn" , m ) ;return 0 ;int strcompare( char *str1 , char *str2 )int i = 0 ;while( ( str1i = str2i ) &am

38、p;&( str1i != '0' ) )i+ ;return( str1i- str2i ) ;第10章結(jié)構(gòu)體與共用體、選擇題1234567891011CBACCDDDCBD二、填空題1. 112. . p->next=head->next head->next=p3. p->next三、程序閱讀題1. 51,60,212. 163. 1001,ChangRong,四、程序完善題1. sizeof( struct ps )或 sizeof( bt )2. p=p->next3. personi.sex五、編程題1 .【參考代碼】#defi

39、ne N 3#include <> struct studentchar num6;char name8;int score2;float ave ;void input( struct student stuN);void average( struct student stuN);int max( struct student stuN);int main()int i , j ;struct student stuN;input( stu );average( stu );printf( "NotNametScore1tScore2tAverage'n&qu

40、ot;);for( i = 0 ; i < N ; i+ )printf( "%st%st" , stui.num , ); for( j = 0 ;j < 2 ; j+ )printf( "%dt" , stui.scorej ) ;printf( "%n" , stui.ave ) ;i = max( stu ) ;printf( "nThe max is ： n" ) ;printf( "NotNametScore1tScore2tAveragen" ) ;

41、printf( "%st%st" , stui.num , ) ;for( j = 0 ; j < 2 ; j+ )printf( "%dt" , stui.scorej ) ;printf( "%n" , stui.ave ) ;return 0;void input( struct student stuN)int i , j ;for(i=0;i<N;i+)printf("nPlease input No%d student:n",i+1);printf("No:&q

42、uot;);scanf("%s",stui.num);printf("Name:");scanf("%s",);for(j=0;j<2;j+)printf("score %d:",j+1);scanf("%d",&stui.scorej);void average( struct student stuN)int i , j , sum ;for(i=0;i<N;i+)for(j=0 , stui.ave = 0 ;j<2;j+)stui.ave +=

43、 stui.scorej;stui.ave = stui.ave / 2 ;int max( struct student stuN)int i , max , index;max = stu0.ave ;index = 0 ;for( i = 1 ; i < N ; i+ )if( max < stui.ave )max = stui.ave ;index = i ;return index;2 . 【參考代碼】#include<>#include<>struct nodeshort int data ;struct node *next ; ;typed

44、ef struct node NODE ;struct node *CreatLink( ) ;void PrintLink( NODE *head ) ;int max( NODE *head );int main( )NODE *head ;int max_value ;head = CreatLink( ) ;PrintLink( head ) ;max_value = max( head ) ;printf( "The max is:%dn" , max_value ) ;return 0 ;struct node *CreatLink( )NODE *head ,

45、 *p , *q ;short int num ;head = ( NODE * )malloc( sizeof( NODE ) ) ;head->next = NULL ;p = head ;printf( "Please input( end of -1)!:n" ) ;scanf( "%d" , &num ) ;while( num != -1 )q = ( NODE *)malloc( sizeof( NODE ) ) ;q->data = num ;p->next = q ;p = q ;scanf( "%d

46、" , &num ) ;p->next = NULL ;return head ;void PrintLink( NODE *head )NODE *p;p = head->next ;printf( "The data is:n" ) ;while( p != NULL )printf( "%4d" , p->data ) ;p = p->next ;printf( "n" ) ;int max( NODE *head )NODE *p;short int max = -32768;p =

47、head->next ;while( p != NULL )if( max < p->data )max = p->data ;p = p->next ;return max ;第11章位運(yùn)算、選擇題1234DBCA二、填空題1. 0000 11112. . x | ff003. 43三、程序閱讀題1. 02. 11 223. 0四、編程題1 .【參考代碼】#include<>int main()short int data , low ,high ;printf( "Please input( short int):");scan

48、f( "%d" , &data );low = data & 0x00ff ; /* 0x00ff表示低字節(jié)全 1 */high = data & 0xff00 ; /* 0xff00表示高字節(jié)全 1 */printf( "data:0x%x,the value of low byte is:0x%xn" , data , high );printf( "data:0x%x,the value of high byte is:0x%xn" , data , low );return 0 ;2 .【參考代碼】#i

49、nclude <>int main()short int data , result ;printf( "Please intput(short int):");scanf( "%d" , &data );result = data A 0x000f ;/* 0x000f表示低 4 位全 1,高 12 位全 0 */printf( "The data is 0x%x nThe result is :0x%xn" , data,result );return 0 ;第12章文件操作、選擇題12345678910111

50、2DB、CCBBABCDBCC131415CDC二、填空題1 . 二進(jìn)制ASCII(文本)2 . FILE *fp # include <>3 . n - 1buf的首地址4 . 15 .用以獲得文件讀寫位置標(biāo)記指針的位置，函數(shù)返回值為當(dāng)前文件讀寫位置標(biāo)記指針相對于文件開頭的字節(jié)數(shù)6 .使文件讀寫位置標(biāo)記指針重新返回文件的開頭 三、程序閱讀題1. 1 22. end3. 34. hello,四、程序完善題1. ! feof (fp)fgetc (fp)2. fopen ( "" ," r" ) fp, " %d' ,&

51、;tempz+3. ( ch=getchar() )ch , fp五、編程題1. 【參考代碼】#include<>#include<>#include<> int main()FILE *fp ;char str100 , filename10;int i = 0 ;if( ( fp = fopen( "" , "w+" ) ) = NULL ) printf( "Cannot open file!n");exit( 0 ); printf( "Please input(string):n

52、");gets( str );while( stri != '!' )if( stri >= 'a' && stri <= 'z' )stri = stri - 32 ;fputc( stri , fp ) ;i+ ;rewind( fp ) ;fgets( str , strlen( str ) + 1 , fp ) ;printf( "nThe result is :n" ) ;printf( "%sn" , str ) ;fclose( fp ) ;return

53、0 ;2. 【參考代碼】#include<>#include<>#define N 5struct studentchar num10 ;char name8 ;int score3 ;float ave ; stuN ;int main( )int i , j , sum ;FILE *fp ;for( i = 0 ; i < N ; i+ )printf( "nPlease input student information: n" , i + 1 ) ;printf( "No:" ) ;scanf( "%s&

54、quot; , stui.num ) ;printf( "Name:" ) ;scanf( "%s" , ) ;sum = 0 ;for( j = 0 ; j < 3 ; j+ )printf( "Score%d:" , j + 1 ) ;scanf( "%d" , &stui.scorej ) ;sum += stui.scorej ;stui.ave = sum / ;if( ( fp = fopen( "" , "w" ) ) = NU

55、LL )printf( "cannot open stud for write!n" ) ;exit( 0 ) ;for( i = 0 ; i < N ; i+ ) fwrite( &stui , sizeof( struct student ) , 1 , fp ) ;fclose( fp ) ;if( ( fp = fopen( "" , "r" ) ) = NULL )printf( "cannot open stud for read!n" ) ;exit( 0 ) ;printf( "nNotNametScore1tScor