2011年9月二级C语言题库及参考答案

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1、第1套题一、程序填空题#include #include #define N 5typedef struct int num; char name10; char tel10;STYPE;void check();/*found*/int fun(_1_ *std)/*found*/ _2_ *fp; int i; if(fp=fopen(myfile5.dat,wb)=NULL) return(0); printf(nOutput data to file !n); for(i=0; iN; i+)/*found*/ fwrite(&stdi, sizeof(STYPE), 1, _3_);

2、 fclose(fp); return (1);main() STYPE s10= 1,aaaaa,111111,1,bbbbb,222222,1,ccccc,333333, 1,ddddd,444444,1,eeeee,555555; int k; k=fun(s); if (k=1) printf(Succeed!); check(); else printf(Fail!);void check() FILE *fp; int i; STYPE s10; if(fp=fopen(myfile5.dat,rb)=NULL) printf(Fail !n); exit(0); printf(n

3、Read file and output to screen :n); printf(n num name teln); for(i=0; iN; i+) fread(&si,sizeof(STYPE),1, fp); printf(%6d %s %sn,si.num,si.name,si.tel); fclose(fp);二、程序改错题#include #include void fun (char *s, char *t) int i, sl; sl = strlen(s);/*found*/ for( i=0; i=s1; i +) ti = si; for (i=0; isl; i+)

4、tsl+i = ssl-i-1;/*found*/ tsl = 0;main() char s100, t100; printf(nPlease enter string s:); scanf(%s, s); fun(s, t); printf(The result is: %sn, t);三、程序编写题#include void fun(int a, int b, long *c)main() int a,b; long c; void NONO ( ); printf(Input a b:); scanf(%d%d, &a, &b); fun(a, b, &c); printf(The r

5、esult is: %dn, c); NONO();void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(K:k0124010001in.dat, r) ; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(rf, %d,%d, &a, &b) ; fun(a, b, &c) ; fprintf(wf, a=%d,b=%d,c=%ldn, a, b, c) ; fclo

6、se(rf) ; fclose(wf) ;第2套题一、程序填空题#include #include #include void WriteText(FILE *);void ReadText(FILE *);main() FILE *fp; if(fp=fopen(myfile4.txt,w)=NULL) printf( open fail!n); exit(0); WriteText(fp); fclose(fp); if(fp=fopen(myfile4.txt,r)=NULL) printf( open fail!n); exit(0); ReadText(fp); fclose(fp)

7、;/*found*/void WriteText(FILE _1_) char str81; printf(nEnter string with -1 to end :n); gets(str); while(strcmp(str,-1)!=0) /*found*/ fputs(_2_,fw); fputs(n,fw); gets(str); void ReadText(FILE *fr) char str81; printf(nRead file and output to screen :n); fgets(str,81,fr); while( !feof(fr) ) /*found*/

8、printf(%s,_3_); fgets(str,81,fr); 二、程序改错题#include /*found*/void fun (long s, long t) long sl=10; *t = s % 10; while ( s 0) s = s/100; *t = s%10 * sl + *t;/*found*/sl = sl*100; main() long s, t; printf(nPlease enter s:); scanf(%ld, &s); fun(s, &t); printf(The result is: %ldn, t);三、程序编写题#include #defi

9、ne N 16typedef struct char num10; int s; STREC;int fun( STREC *a, STREC *b )main() STREC sN=GA05,85,GA03,76,GA02,69,GA04,85,GA01,91,GA07,72,GA08,64,GA06,87,GA015,85,GA013,91,GA012,64,GA014,91,GA011,91,GA017,64,GA018,64,GA016,72; STREC hN; int i,n;FILE *out ; n=fun( s,h ); printf(The %d lowest score

10、:n,n); for(i=0;in; i+) printf(%s %4dn,hi.num,hi.s); printf(n); out = fopen(K:k0124010001out.dat,w) ; fprintf(out, %dn,n); for(i=0;in; i+) fprintf(out, %4dn,hi.s); fclose(out);第3套题一、程序填空题#include #include int fun(char *fname ) FILE *fp; int i,n; float x; if(fp=fopen(fname, w)=NULL) return 0; for(i=1;

11、i=10;i+)/*found*/ fprintf(_1_,%d %fn,i,sqrt(double)i); printf(nSucceed!！n);/*found*/ _2_; printf(nThe data in file :n);/*found*/ if(fp=fopen(_3_,r)=NULL) return 0; fscanf(fp,%d%f,&n,&x); while(!feof(fp) printf(%d %fn,n,x); fscanf(fp,%d%f,&n,&x); fclose(fp); return 1;main() char fname=myfile3.txt; fu

12、n(fname);二、程序改错题#include #include void fun ( int n, int *a ) int i, j, p, t; for ( j = 0; jn-1 ; j+ ) p = j;/*found*/ for ( i=j+1; iai )/*found*/ t=i; if ( p!=j ) t = aj; aj = ap; ap = t; void putarr( int n, int *z ) int i; for ( i = 1; i = n; i+, z+ ) printf( %4d, *z ); if ( !( i%10 ) ) printf( n )

13、; printf(n);main() int aa20=9,3,0,4,1,2,5,6,8,10,7, n=11; printf( nnBefore sorting %d numbers:n, n ); putarr( n, aa ); fun( n, aa ); printf( nAfter sorting %d numbers:n, n ); putarr( n, aa );三、程序编写题#include void fun(int a, int b, long *c)main() int a,b; long c; void NONO ( ); printf(Input a b:); sca

14、nf(%d%d, &a, &b); fun(a, b, &c); printf(The result is: %ldn, c); NONO();void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(K:k0124010001in.dat, r) ; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(rf, %d,%d, &a, &b) ; fun(a, b, &c) ;

15、 fprintf(wf, a=%d,b=%d,c=%ldn, a, b, c) ; fclose(rf) ; fclose(wf) ;第4套题一、程序填空题#include #include int fun(char *source, char *target) FILE *fs,*ft; char ch;/*found*/ if(fs=fopen(source, _1_)=NULL) return 0; if(ft=fopen(target, w)=NULL) return 0; printf(nThe data in file :n); ch=fgetc(fs);/*found*/ whi

16、le(!feof(_2_) putchar( ch );/*found*/ fputc(ch,_3_); ch=fgetc(fs); fclose(fs); fclose(ft); printf(nn); return 1;main() char sfname20 =myfile1,tfname20=myfile2; FILE *myf; int i; char c; myf=fopen(sfname,w); printf(nThe original data :n); for(i=1; i30; i+) c=A+rand()%25;fprintf(myf,%c,c); printf(%c,c

17、); fclose(myf);printf(nn); if (fun(sfname, tfname) printf(Succeed!); else printf(Fail!);二、程序改错题#include void fun (long s, long *t) int d; long sl=1; *t = 0; while ( s 0) d = s%10;/*found*/ if (d%2=0) *t=d* sl+ *t; sl *= 10; /*found*/ s = 10; main() long s, t; printf(nPlease enter s:); scanf(%ld, &s)

18、; fun(s, &t); printf(The result is: %ldn, t);三、程序编写题#include #include void fun(char *s, char t)main() char s100, t100; void NONO ( ); printf(nPlease enter string S:); scanf(%s, s); fun(s, t); printf(nThe result is: %sn, t); NONO();void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ char s100, t100 ; F

19、ILE *rf, *wf ; int i ; rf = fopen(K:k0124010001in.dat,r) ; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(rf, %s, s) ; fun(s, t) ; fprintf(wf, %sn, t) ; fclose(rf) ; fclose(wf) ;第5套题一、程序填空题#include #include #define N 8typedef struct list int data; struct list *next; SLIST;void fu

20、n( SLIST *h, int x) SLIST *p, *q, *s; s=(SLIST *)malloc(sizeof(SLIST);/*found*/ s-data=_1_; q=h; p=h-next; while(p!=NULL & xp-data) /*found*/ q=_2_; p=p-next; s-next=p;/*found*/ q-next=_3_;SLIST *creatlist(int *a) SLIST *h,*p,*q; int i; h=p=(SLIST *)malloc(sizeof(SLIST); for(i=0; idata=ai; p-next=q;

21、 p=q; p-next=0; return h;void outlist(SLIST *h) SLIST *p; p=h-next; if (p=NULL) printf(nThe list is NULL!n); else printf(nHead); do printf(-%d,p-data); p=p-next; while(p!=NULL); printf(-Endn); main() SLIST *head; int x; int aN=11,12,15,18,19,22,25,29; head=creatlist(a); printf(nThe list before inser

22、ting:n); outlist(head); printf(nEnter a number : ); scanf(%d,&x); fun(head,x); printf(nThe list after inserting:n); outlist(head);二、程序改错题#include long fun (long num)/*found*/ long k; do k*=num%10 ;/*found*/ num=10 ; while(num) ; return (k) ;main( ) long n ; printf(nPlease enter a number:) ; scanf(%l

23、d,&n) ; printf(n%ldn,fun(n) ;三、程序编写题#include float fun ( float *a , int n )main() float score30=90.5, 72, 80, 61.5, 55, aver; void NONO ( ); aver = fun( score, 5 ); printf( nAverage score is: %5.2fn, aver); NONO ( );void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ FILE *fp, *wf ; int i, j ; float a

24、ver, score5 ; fp = fopen(K:k0124010001in.dat,r) ; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) for(j = 0 ; j 5 ; j+) fscanf(fp,%f,&scorej) ; aver = fun(score, 5) ; fprintf(wf, %5.2fn, aver) ; fclose(fp) ; fclose(wf) ;第6套题一、程序填空题#include #include #define N 8typedef struct list int data

25、; struct list *next; SLIST;void fun( SLIST *p) SLIST *t, *s; t=p-next; s=p; while(t-next != NULL) s=t;/*found*/ t=t-_1_; /*found*/ printf( %d ,_2_); s-next=NULL;/*found*/ free(_3_);SLIST *creatlist(int *a) SLIST *h,*p,*q; int i; h=p=(SLIST *)malloc(sizeof(SLIST); for(i=0; idata=ai; p-next=q; p=q; p-

26、next=0; return h;void outlist(SLIST *h) SLIST *p; p=h-next; if (p=NULL) printf(nThe list is NULL!n); else printf(nHead); do printf(-%d,p-data); p=p-next; while(p!=NULL); printf(-Endn); main() SLIST *head; int aN=11,12,15,18,19,22,25,29; head=creatlist(a); printf(nOutput from head:n); outlist(head);

27、printf(nOutput from tail: n); while (head-next != NULL) fun(head); printf(nn); printf(nOutput from head again :n); outlist(head); 二、程序改错题#include /*found*/fun (char a) if ( *a ) fun(a+1) ;/*found*/ printf(%c *a) ; main( ) char s10=abcd; printf(处理前字符串=%sn处理后字符串=, s); fun(s); printf(n) ;三、程序编写题#includ

28、e char *fun ( char *s, char *t)main( ) char a20,b20; void NONO ( ); printf(Input 1th string:) ; gets( a); printf(Input 2th string:) ; gets( b); printf(%sn,fun (a, b ); NONO ();void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ FILE *fp, *wf ; int i ; char a20, b20 ; fp = fopen(K:k0124010001in.dat,r)

29、; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(fp, %s %s, a, b) ; fprintf(wf, %sn, fun(a, b) ; fclose(fp) ; fclose(wf) ;第7套题一、程序填空题#include #include #define N 8typedef struct list int data; struct list *next; SLIST;void fun( SLIST *h) SLIST *p, *q; p=h-next; if (p!=NULL) q=p-ne

30、xt; while(q!=NULL) if (p-data=q-data) p-next=q-next;/*found*/ free(_1_);/*found*/ q=p-_2_; else p=q;/*found*/ q=q-_3_; SLIST *creatlist(int *a) SLIST *h,*p,*q; int i; h=p=(SLIST *)malloc(sizeof(SLIST); for(i=0; idata=ai; p-next=q; p=q; p-next=0; return h;void outlist(SLIST *h) SLIST *p; p=h-next; if

31、 (p=NULL) printf(nThe list is NULL!n); else printf(nHead); do printf(-%d,p-data); p=p-next; while(p!=NULL); printf(-Endn); main( ) SLIST *head; int aN=1,2,2,3,4,4,4,5; head=creatlist(a); printf(nThe list before deleting :n); outlist(head); fun(head); printf(nThe list after deleting :n); outlist(head

32、);二、程序改错题#include #define N 20void fun(int a, int n) int i, j, t, p; for (j = 0 ;j n-1 ;j+) /*found*/ p = j for (i = j+1;i n; i+) if(ai ap)/*found*/ p = j; t = ap ; ap = aj ; aj = t; main() int aN=9,6,8,3,-1,i, m = 5; printf(排序前的数据:) ; for(i = 0;i m;i+) printf(%d ,ai); printf(n); fun(a,m); printf(排序

33、后的数据:) ; for(i = 0;i m;i+) printf(%d ,ai); printf(n);三、程序编写题#include #define M 100void fun ( int m, int *a , int *n )main( ) int aaM, n, k; void NONO ( ); fun ( 50, aa, &n ); for ( k = 0; k n; k+ ) if(k+1)%20=0) printf(n); else printf( %4d, aak ); printf(n) ; NONO( );void NONO ( )/* 本函数用于打开文件，输入数据，调

34、用函数，输出数据，关闭文件。 */ FILE *fp, *wf ; int i, n, j, k, aaM, sum ; fp = fopen(K:k0124010001in.dat,r) ; wf = fopen(K:k0124010001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(fp, %d, &j) ; fun(j, aa, &n) ; sum = 0 ; for(k = 0 ; k n ; k+) sum+=aak ; fprintf(wf, %dn, sum) ; fclose(fp) ; fclose(wf) ;第8套题一、程序填空题#i

35、nclude #include #define N 8typedef struct list int data; struct list *next; SLIST;SLIST *creatlist(char *);void outlist(SLIST *);int fun( SLIST *h, char ch) SLIST *p; int n=0; p=h-next;/*found*/ while(p!=_1_) n+;/*found*/ if (p-data=ch) return _2_; else p=p-next; return 0;main() SLIST *head; int k;

36、char ch; char aN=m,p,g,a,w,x,r,d; head=creatlist(a); outlist(head); printf(Enter a letter:); scanf(%c,&ch);/*found*/ k=fun(_3_); if (k=0) printf(nNot found!n); else printf(The sequence number is : %dn,k);SLIST *creatlist(char *a) SLIST *h,*p,*q; int i; h=p=(SLIST *)malloc(sizeof(SLIST); for(i=0; ida

37、ta=ai; p-next=q; p=q; p-next=0; return h;void outlist(SLIST *h) SLIST *p; p=h-next; if (p=NULL) printf(nThe list is NULL!n); else printf(nHead); do printf(-%c,p-data); p=p-next; while(p!=NULL); printf(-Endn); 二、程序改错题#include #include #include fun ( char *p) int i,t; char c80;/*found*/ For (i = 0,t =

38、 0; pi ; i+) if(!isspace(*(p+i) ct+=pi;/*found*/ ct=0; strcpy(p,c);main( ) char c,s80; int i=0; printf(Input a string:); c=getchar(); while(c!=#) si=c;i+;c=getchar(); si=0; fun(s); puts(s);三、程序编写题#include #include void fun ( char *ss )main( ) char tt81 ; void NONO ( ); printf( nPlease enter an strin

39、g within 80 characters:n ); gets( tt ); printf( nnAfter changing, the stringn %s, tt ); fun( tt ); printf( nbecomesn %sn, tt ); NONO ( );void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */ FILE *fp, *wf ; char tt81 ; int i ; fp = fopen(K:k0124010001in.dat,r) ; wf = fopen(K:k0124010001out.dat,w) ; for(

40、i = 0 ; i 10 ; i+) fscanf(fp, %s, tt) ; fun( tt ) ; fprintf(wf, %sn, tt) ; fclose(fp) ; fclose(wf) ;第9套题一、程序填空题#include #include #define N 8typedef struct list int data; struct list *next; SLIST;SLIST *creatlist(int *a);void outlist(SLIST *);void fun( SLIST *h, int *n) SLIST *p;/*found*/ _1_=0; p=h-

41、next; while(p) (*n)+;/*found*/ p=p-_2_; main() SLIST *head; int aN=12,87,45,32,91,16,20,48, num; head=creatlist(a); outlist(head);/*found*/ fun(_3_, &num); printf(nnumber=%dn,num);SLIST *creatlist(int a) SLIST *h,*p,*q; int i; h=p=(SLIST *)malloc(sizeof(SLIST); for(i=0; idata=ai; p-next=q; p=q; p-ne

42、xt=0; return h;void outlist(SLIST *h) SLIST *p; p=h-next; if (p=NULL) printf(The list is NULL!n); else printf(nHead ); do printf(-%d,p-data); p=p-next; while(p!=NULL); printf(-Endn); 二、程序改错题#include #include char * fun (char *s, char *t ) char *p , *r, *a;/*found*/ a = Null; while ( *s ) p = s; r =

43、t; while ( *r )/*found*/ if ( r = p ) r+; p+; else break; if ( *r = 0 ) a = s; s+; return a ;main() char s100, t100, *p; printf(nPlease enter string S :); scanf(%s, s ); printf(nPlease enter substring t :); scanf(%s, t ); p = fun( s, t ); if ( p ) printf(nThe result is : %sn, p); else printf(nNot found !n );三、程序编写题#include void fun(int a, int b, long *c)main() int a,b; long c; void NONO ( ); printf(Input a b:); scanf(%d%d, &a, &b); fun(a, b, &c); printf(The result is: %ldn, c); NONO();void NONO ( )/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */