等级考试上机题目(上课用)

1、等级考试上机题目(上课用) 第1套 1程序填空： #include stdio.h #include stdlib.h #define n 5 typedef 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*/

2、 fwrite(stdi, sizeof(stype), 1, _3_); 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() 1 file *fp; int i; stype s10; if(fp=fopen(myfile5.dat,rb

3、)=null) printf(fail !n); exit(0); printf(nread 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.tel); fclose(fp); 2改错题 #include stdio.h #include string.h void fun (char *s, char *t) int i, sl; sl = strlen(s);

4、 /*found*/ for(i=0; i=s1; i +) ti = si; for (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); 2 3程序设计题 #include stdio.h void fun(int a, int b, long *c) main() int a,b; long c; void nono

5、(); printf(input a, b:); scanf(%d,%d, a, b); fun(a, b, c); printf(the result 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(in.dat, r); wf = fopen(out.dat,w); for(i = 0 ; i 10 ; i+) fscanf(rf, %d,%d, a, b); fun(a, b, c); fprintf

6、(wf, a=%d,b=%d,c=%ldn, a, b, c); fclose(rf); fclose(wf); 3 第2套题 1程序填空题 #include stdio.h #include string.h #include stdlib.h 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.t

7、xt,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,-1)!=0) /*found*/ fputs(_2_,fw); fputs(n,fw); gets(str); void readtext(file *fr) char str81; printf(nread file and

8、output to screen :n); fgets(str,81,fr); while(!feof(fr) /*found*/ printf(%s,_3_); fgets(str,81,fr); 4 2程序修改题 #include stdio.h /*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:); sc

9、anf(%ld, s); fun(s, t); printf(the result is: %ldn, t); 3程序设计题 #include stdio.h void fun(int a, int b, long *c) 5 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。*/ file

10、 *rf, *wf ; int i, a,b ; long c ; rf = fopen(in.dat, r); wf = fopen(out.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3套 1程序填空题 #include math.h #include stdio.h int fun(char *fname) file *fp; int i,n; float x; i

11、f(fp=fopen(fname, w)=null) return 0; 6 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,x); fclose(

12、fp); return 1; main() char fname=myfile3.txt; fun(fname); 2程序填空题 #include stdio.h #include stdlib.h fun (int n, int *a) int i, j, p, t; for (j = 0; jn-1 ; j+) p = j; /*found*/ for (i=j+1; in-1 ; i+) if (apai) /*found*/ t=i; if (p!=j) t = aj; aj = ap; ap = t; putarr(int n, int *z) int i; for (i = 1;

13、i = n; i+, z+) 7 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); 3程序设计题 #include stdio.h void fun(int a, int b, long *c) main()

14、 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。*/ file *rf, *wf ; int i, a,b ; long c ; 8 rf = fopen(in.dat, r); wf = fopen(out.dat,w); for(i = 0 ; i 10 ; i+) fscanf(rf, %d,%

15、d, a, b); fun(a, b, c); fprintf(wf, a=%d,b=%d,c=%ldn, a, b, c); fclose(rf); fclose(wf); 第4套 1程序填空题 #include stdio.h #include stdlib.h 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

16、in file :n); ch=fgetc(fs); /*found*/ while(!feof(_2_) putchar(ch); /*found*/ fputc(ch,_3_); ch=fgetc(fs); fclose(fs); fclose(ft); printf(nn); return 1; main() 9 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

17、+rand()%25;fprintf(myf, %c,c); printf(%c,c); fclose(myf);printf(nn); if (fun(sfname, tfname) ) printf(succeed!); else printf(fail!); 2程序改错题 #include stdio.h 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(

18、) long s, t; printf(nplease enter s:); scanf(%ld, s); fun(s, t); printf(the result is: %ldn, t); 3程序设计题 10 #include stdio.h 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 (

19、) /* 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(in.dat, r); wf = fopen(out.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); 11 第5套 1程序填空题 #include stdio.h #include stdlib.h #de

20、fine n 8 typedef 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; s-next=p; /*found*/ q-next=_3_; slist *creatlist(int *a) slist *h,*p,*q

21、; int i; h=p=(slist *)malloc(sizeof(slist); for(i=0; in; i+) q=(slist *)malloc(sizeof(slist); q-data=ai; p-next=q; p=q; p-next=0; return h; void outlist(slist *h) slist *p; 12 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); prin

22、tf(-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); 2程序改错题 #include stdio.h long fun (long num) /*found*

23、/ 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); 3程序设计题 13 #include stdio.h float fun (float *a , int n) main() float score30=90.5, 72, 80, 61.5, 55, aver; void nono (); aver = fun(score, 5); print

24、f(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 aver, score5 ; fp = fopen(in.dat,r); wf = fopen(out.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

25、); fclose(fp); fclose(wf); 14 第6套 1程序填空题 #include stdio.h #include stdlib.h #define n 8 typedef 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_);

26、slist *creatlist(int *a) slist *h,*p,*q; int i; h=p=(slist *)malloc(sizeof(slist); for(i=0; in; i+) q=(slist *)malloc(sizeof(slist); q-data=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); 15 else printf(nhead); do printf(-%d,

27、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); printf(noutput from tail: n); while (head-next != null) fun(head); printf(nn); printf(noutput from head again :n); outlist(head); 2程序改错

28、题 #include stdio.h /*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); 3程序设计题 16 #include stdio.h char *fun (char *s, char *t) main() char a20,b20; void nono (); printf(input 1th string:); gets(a); printf(input 2th

29、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(in.dat,r); wf = fopen(out.dat,w); for(i = 0 ; i 10 ; i+) fscanf(fp, %s %s, a, b); fprintf(wf, %sn, fun(a, b); fclose(fp); fclose(wf); 17 第7套 1程序填空题 #

30、include stdio.h #include stdlib.h #define n 8 typedef struct list int data; struct list *next; slist; void fun(slist *h) slist *p, *q; p=h-next; if (p!=null) q=p-next; 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 *creatli

31、st(int *a) slist *h,*p,*q; int i; h=p=(slist *)malloc(sizeof(slist); for(i=0; in; i+) q=(slist *)malloc(sizeof(slist); q-data=ai; p-next=q; p=q; 18 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-n

32、ext; 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); 2程序修改题 #include stdio.h #define n 20 void fun(int a, int n) int i, j, t, p; for (j = 0 ;j n-1 ;j+) /*found*/ p = j for (i = j;i n; i+) if(ai ap)