[电脑基础知识]C语言上机题库及解析.doc

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1、第一套一、填空#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_); fcl

2、ose(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(nRead

3、 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);答案:1.STYPE 2.FILE 3.fp二、改错#include #include void fun (char *s, char *t) int i, sl; sl = strlen(s);/*found*/ for( i=0; i=s1; i +) ti = si; for

4、 (i=0; isl; i+)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);答案:1.for(i=0;is1;i+) 2.t2*s1=0三、编程#include void fun(int a, int b, long *c)main() int a,b; long c; void NONO ( ); printf(Input a, b:); scanf

5、(%d,%d, &a, &b); fun(a, b, &c); printf(The result is: %dn, c); NONO();void NONO ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.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

6、, a, b, c) ; fclose(rf) ; fclose(wf) ;答案:#include void fun(int a, int b, long *c) *c=(a/10)*1000+(b/10)*100+(a%10)*10+(b%10);main() int a,b; long c; printf(Input a, b:); scanf(%d,%d, &a, &b); fun(a, b, &c); printf(The result is: %dn, c); NONO();NONO ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf

7、= fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.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) ; fclose(rf) ; fclose(wf) ;第二套一、填空#include #include #include void WriteText(FILE *);void ReadText(FILE *);main() FILE *

8、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);/*found*/void WriteText(FILE _1_) char str81; printf(nEnter string with -1 to end :n); gets(str); while(strcmp(str,-

9、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*/ printf(%s,_3_); fgets(str,81,fr); 答案:1.*fw 2.str 3.str二、改错#include /*found*/void fun (long s, long t) long sl=10; *t

10、= 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);答案:1.void fun(long s,long *t) 2.s1=s1*10;三、编程#include void fun(int a, int b, long *c)main() int a,b; long c; void NONO (

11、); printf(Input a, b:); scanf(%d,%d, &a, &b); fun(a, b, &c); printf(The result is: %ldn, c); NONO();void NONO ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.dat,w) ; for(i = 0 ; i 10 ; i+) fscanf(rf, %d,%d, &a, &b) ; fun(a, b, &c)

12、; fprintf(wf, a=%d,b=%d,c=%ldn, a, b, c) ; fclose(rf) ; fclose(wf) ;答案:#include void fun(int a, int b, long *c) *c=(b/10)*1000+(a%10)*100+(b%10)*10+(a/10);main() int a,b; long c; printf(Input a, b:); scanf(%d,%d, &a, &b); fun(a, b, &c); printf(The result is: %ldn, c); NONO();NONO ( )/* */ FILE *rf,

13、*wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.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) ; fclose(rf) ; fclose(wf) ;第三套一、填空#include #include int fun(char *fname ) FILE *fp; int

14、i,n; float x; if(fp=fopen(fname, w)=NULL) return 0; for(i=1;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,

15、&x); fclose(fp); return 1;main() char fname=myfile3.txt; fun(fname);答案:1.fp 2.fclose(fp) 3.fname二、改错#include #include 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; putarr( int n, int *z ) int i; fo

16、r ( i = 1; i = n; i+, z+ ) printf( %4d, *z ); if ( !( i%10 ) ) printf( n ); 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 );答案:1.for(i=j+1;in;i+) 2.p=i;三、编程#in

17、clude 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 ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.d

18、at,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) ; fclose(rf) ; fclose(wf) ;答案:#include void fun(int a, int b, long *c) *c=(b%10)*1000+(a%10)*100+(b/10)*10+(a/10);main() int a,b; long c; printf(Input a, b:); scanf(%d,%d, &a, &b); fun(a

19、, b, &c); printf(The result is: %ldn, c); NONO();NONO ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.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) ; fclose(rf) ;

20、fclose(wf) ;第四套一、填空#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*/ while(!feof(_2_) putchar( ch );/*found*/ fputc(ch,_3_); ch=fge

21、tc(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); fclose(myf);printf(nn); if (fun(sfname, tfname) printf(S

22、ucceed!); else printf(Fail!);答案:1.”r” 2.fs 3.ft二、改错#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); fun(s, &t); printf(The result is: %ldn, t)

23、;答案:1.if(d%2=0) 2.s/=10;三、编程#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 ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ;

24、wf = fopen(C:WEXAM24990001out.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) ; fclose(rf) ; fclose(wf) ;答案:#include void fun(int a, int b, long *c) *c=(a%10)*1000+(b/10)*100+(a/10)*10+(b%10);main() int a,b; long c; printf(Input a, b

25、:); scanf(%d,%d, &a, &b); fun(a, b, &c); printf(The result is: %ldn, c); NONO();NONO ( )/* */ FILE *rf, *wf ; int i, a,b ; long c ; rf = fopen(C:WEXAM24990001in.dat, r) ; wf = fopen(C:WEXAM24990001out.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

26、=%ldn, a, b, c) ; fclose(rf) ; fclose(wf) ;第五套一、填空#include #include #define N 8typedef struct list int data; struct list *next; SLIST;void fun( 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;

27、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; 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-nex

28、t; 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 inserting:n); outlist(head); printf(nEnter a number : ); scanf(%d,&x); fun(head,x); printf(nThe list after inserting:n); outlist(head);答案:1.x 2.p 3.s二、改错#include lo

29、ng 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(%ld,&n) ; printf(n%ldn,fun(n) ;答案:1.long k=1; 2.num/=10;三、编程#include float fun ( float *a , int n )main() float score30=90.5, 72, 80, 61.5, 55, aver;

30、void NONO ( ); aver = fun( score, 5 ); printf( nAverage score is: %5.2fn, aver); NONO ( );void NONO ( )/* */ FILE *fp, *wf ; int i, j ; float aver, score5 ; fp = fopen(C:WEXAM24990001in.dat,r) ; wf = fopen(C:WEXAM24990001out.dat,w) ; for(i = 0 ; i 10 ; i+) for(j = 0 ; j 5 ; j+) fscanf(fp,%f,&scorej)

31、 ; aver = fun(score, 5) ; fprintf(wf, %5.2fn, aver) ; fclose(fp) ; fclose(wf) ;答案:#include float fun ( float *a , int n ) int i; float ave=0.0; for(i=0; in; i+) ave=ave+ai ; ave=ave/n; return ave;main() float score30=90.5, 72, 80, 61.5, 55, aver; aver = fun( score, 5 ); printf( nAverage score is: %5

32、.2fn, aver); NONO ( );NONO ( )/* */ FILE *fp, *wf ; int i, j ; float aver, score5 ; fp = fopen(C:WEXAM24990001in.dat,r) ; wf = fopen(C:WEXAM24990001out.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) ;第六套一、填空#include #include #define N 8typedef struct list int data; 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; i

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