二级c语言题库答案.pdf

《二级c语言题库答案.pdf》由会员分享，可在线阅读，更多相关《二级c语言题库答案.pdf（102页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、二 级C语言题库答案第1套题一、程序填空题#include<stdio.h>#include<stdlib.h>#define N 5typedef struct int num;char name10;char tel10;STYPE;void check();/*fou nd*字/int fun(STYPE*std)/*fou nd*/FILE*fp;intif(fp=fopen("myfile5.dat","wb")=NULL)printf("nOutput data to file!n");for(i=

2、0;i<N;i+)/*found*/return(O);fwrite(&stdi,sizeof(STYPE),1,fp);fclose(fp);return(1);二、程序改错题#include<stdio.h>#include<string.h>void fun(char*s,char*t)int i,si;si=strlen(s);/*字 不*字found*亭 亭*/for(i=0;i<=sl;i+)ti=si;for(i=0;i<sl;i+)tsl+i=ssl-i-l;/*found*/tsl+sl=0,;main()char s100,

3、t100;printf("nPIease enter string s:");scanf("%s",s);fun(s,t);printf("The result is:%sn",t);)第2套题一、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",&q

4、uot;w")=NULL)printf("openfail!n");exit(O);WriteText(fp);fclose(fp);if(fp=fopen("myfile4.txt","r")=NULL)printf("openfail!n");exit(O);ReadText(fp);fclose(fp);/*；jcfound*/void WriteText(FILE*fw)char str81;printf("nEnter string with-1 to end:n");get

5、s(str);while(strcmp(str,"-1")!=0)/*found*/fputs(str,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)/*tound*/printf("%s",str);fgets(str,81,fr);二、程序改错题#include<stdio.h&g

6、t;long sl=10;*t=s%10;while(s>0)s=s/100;*t=s%10*si+*t;main()long s,t;printf("nPlease enter s:");scanf("%ld",&s);fun(s,&t);printf("The result is:%ldn",t);)第 3 套题一、程序填空题#include<math.h>#include<stdio.h>int fun(char*fname)FILE*fp;int i,n;float x;if(fp

7、=fopen(fname,"w")=NULL)return 0;for(i=l;i<=10;i+)fprintf(fp,"%d%fn",i,sqrt(double)i);printf("nSucceed!n");/*found*/Fclose(fp);printf("nThe data in file:n");/*found*/if(fp=fopen(myfile3.tex,"r")=NULL)return 0;fscanf(fp,"%d%f",&n,&

8、x);while(!feof(fp)printf("%d%fn",n,x);fscanf(fp,"%d%f",&n,&x);fclose(fp);return 1;)main()char fname="myfile3.txt"fun(fname);)二、程序改错题#include<stdio.h>#include<stdlib.h>void fun(int n,int*a)int i,j,p,t;for(j=0;j<n-l;j+)p=j;/*und*/for(i=j+l;i<n;i+

9、)if(ap>ai)/*字*不found*不 不*不*/p=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");printf("n");main()int aa20=9,3,0,4,19,5,6,8,10,7),n=ll;printf("nnBefore sorting%d numbers:n",n);putarr(n,aa);

10、printf("nAfter sorting%d numbers:n",n);putarr(n,aa);fun(n,aa);第4套题一、程序填空题#include<stdio.h>#include<stdlib.h>int fun(char source,char*target)/*found*/if(fs=fopen(source,"r")=NULL)if(ft=fopen(target,"w")=NULL)FILEreturn 0;return 0;char ch;printf("nThe dat

11、a in file:n");ch=fgetc(fs);/*found*/putchar(ch);/*字*found*不*/ch=fgetc(fs);)fclose(fs);fclose(ft);printf("nn");return 1;while(!feof(fs)fputc(ch,ft);二、程序改错题#include<stdio.h>void fun(long s,long*t)int d;long sl=l;*t=0;while(s>0)d=s%10;/*亭*亭 found*/*t=d*sl+*t;si*=10;/*found*/)mai

12、n()if(d%2=0)s/=10;long s,t;printf("nPlease enter s:");scanf("%ld",&s);fun(s,&t);printf("The result is:%ldn",t);第 5 套题一、程序填空题#include<stdio.h>#include<stdlib.h>#define N 8typedef stiuct list int data;struct list*next;SLIST;void fun(SLIST*h,int x)SLIST

13、*p,*q,*s;s=(SLIST*)maHoc(sizeof(SLIST);/*found*/s->data=x;q=h;p=h->next;while(p!=NULL&&x>p->data)/*字 不*fou nd*/q=p；p=p->next;s->next=p;/*found*/q->next=s;)SLIST*creatlist(int*a)SLIST*h,*p,*q;int i;h=p=(SLIST*)malloc(sizeof(SLIST);for(i=0;i<N;i+)q=(SLIST*)malloc(sizeof

14、(SLIST);q->data=ail;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->next;printf("->Endn");)二、程序改错题 while(p!=NULL);#inc

15、lude<stdio.h>long fun(long num)long k=l;do k*=num%10;/*found*/Num/=10;while(num);return(k);)main()long n;printf("nPlease enter a number:")printf("n%ldn",fun(n);)第 6 套题一、程序填空题scanf("%ld",&n)#include<stdio.h>#include<stdlib.h>#define N 8typedef struc

16、t list int data;struct list*next;SLIST;void fun(SLIST*p)SLIST 九，*s;t=p->next;s=p;while(t->next!=NULL)s=t;/*found*/t=t->next;)/*found*/printf("%d",t->data);s->next=NULL;/*fou nd*不/free(t);SLIST*creatlist(int*a)SLIST*h,*p,*q;int i;h=p=(SLIST*)malloc(sizeof(SLIST);for(i=0;i<

17、N;i+)q=(SLIST*)malloc(sizeof(SLIST);q->data=ai;p->next=q;p=q;)p->next=O;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;printf("->Endn");)二

18、、程序改错题 while(p!=NULL);#include<stdio.h>/*fk)und*/fun(char"*a)if(*a)fun(a+l);/*字 *f)und*不萃*/printf("%c",*a);main()char s10="abcd"printf("处理前字符串二%sn处理后字符串二",s);fun(s);printf("n");)第 7 套题、程序填空题p->next=O;return h;#include<stdio.h>#include<st

19、dlib.h>#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->next;while(q!=NULL)if(p->data=q->data)p->next=q->next;/*found*/free(q);/*found*/q=p->next;)elsep=q;/*found*/q=q->next;)SLIST*creatlist(int*a)SLIST*h,

20、*p,*q;int i;h=p=(SLIST*)malloc(sizeof(SLIST);for(i=0;i<N;i+)q=(SLIST*)malloc(sizeof(SLIST);q->data=ai;p->next=q;p=q;二、程序改错题#include<stdio.h>#define N 20void fun(int a,int n)int i,j,t,p;for(j=0;j<n-1；j+)/*tound*字*亭*/P=j；for(i=j+l;i<n;i+)if(ai<ap)/*found*/P=i；t=ap;ap=aj;aj=t;)m

21、ain()int aN=9,6,8,3,-l,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("排序后的数据:");for(i=0;i<m;i+)printf("%d",ai);printf("n");第8套题一、程序填空题#include<stdio.h>#include<stdlib.h>#define N 8typed

22、ef 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;while(p!=NULL)n+;/*found*不*/if(p->data=ch)return n;else p=p->next;)return 0;main()SLIST*head;int k;char ch;charaM=m，/p r gaTw，,k,T,d ;head=creatlist(a

23、);outlist(head);printf("Enter a letter:");scanf("%c",&ch);/*found*/k=fun(head,ch);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;i<N;i+)q=(SLI

24、ST*)malloc(sizeof(SLIST);q->data=aij;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&quo

25、t;);)二、程序改错题#include<string.h>#include<stdio.h>#include<ctype.h>fun(char*p)int i,t;char c80;/*字 found*不*/for(i=0,t=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=

26、t0,;fun(s);puts(s);)第 9 套题一、程序填空题#include<stdio.h>#include<stdlib.h>#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*/*n=0;p=h->next;while(p)(*n)+;p=p->next;)main()SLIST*head;int aNJ=12

27、,87,45,32,91,16,20,48,num;head=creatlist(a);outlist(head);/*found*/fun(head,&num);printf("nnumber=%dn",num);SLIST*creatlist(int a)SLIST*h,*p,*q;int i;h=p=(SLIST*)malloc(sizeof(SLIST);for(i=0;i<N;i+)q=(SLIST*)malloc(sizeof(SLIST);q->data=afi;p->next=q;p=q;p->next=0;return h;

28、二、程序改错题#include<stdio.h>#include<string.h>char*fun(char*s,char*t)char*p,*r,*a;/*found*/a=NULL;while(*s)P=s；while(*r)/*字 不*fou nd*字，孝 字*/if(*r=*p)r+；P+；else break;if(*r=A0,)a=s;s+;)return a;main()(char s100,t100,*p;printf("nPlease enter string S:");scanf("%s",s);printf

29、("nPlease enter substring t:");scanf("%s",t);p=fun(s,t);if(p)printf("nThe result is:%sn",p);else printf("nNotfound!n");)第10套题一、程序填空题#include<stdio.h>#include<stdlib.h>#define N 8typedef struct list int data;struct list*next;SLIST;SLIST*creatlist(in

30、t*);void outlist(SLIST*);int fun(SLIST*h)SLIST*p;while(p)int s=0p=h->next;/*found*/*fou nd*/s+=p->data;p=p->next;)return s;main()SLIST*head;int aN=12,87,45,32,91,16,20,48);/*亭*found*萃 水 萃 萃/printf("nsum=%dn",fun(head);head=creatiist(a);outlist(head);SLIST*creatlist(int a)SLIST*h,*

31、p,*q;int i;h=p=(SLIST*)malloc(sizeof(SLIST);for(i=0;i<N;i+)q=(SLIST*)malloc(sizeof(SLIST);q->data=ai;p->next=q;p=q;p->next=0;return h;二、程序改错题#include<stdio.h>#include<string.h>void fun(char*s,char*tl,char*t2,char*w)char*p,*r,*a;strcpy(w,s);while(*w)p=w;r=tl;/*f)und*/while(*r)

32、if(*r=*p)r+;p+;else break;if(*r=0)a=w;r=t2;while(*r)*a=*r;a+;r+;w+=strlen(t2);)else w+;第 11套题一、程序填空题#include<stdio.h>#include<string.h>#define M 5#define N 20int fun(char(*ss)N,int*n)/*不 found*琴*/len=strlen(ssi);if(i=0)*n=len;/*found*/*n=len;k=i;)/*found*/int i,k=0,len=N;for(i=0;i+)if(le

33、n<*n)return(k);二、程序改错题#include<stdio.h>#include<string.h>char*fun(char tt)int i;for(i=0;tti;i+)/*字 found*字 字/*found*/return(tt);if(匕<=tti)&&(tti<=3 )tti-=32;main()char tt81;printf("nPlease enter a string:");gets(tt);printf("nThe result string is:n%s",

34、fun(tt);第 12套题一、程序填空题#include<stdio.h>void fun(char*s)int i,j=0,k=0;char tl80,t280J;for(i=0;si!=t0,;i+)if(sil>=O,&&si<=t9,)/*found*/)else tlk+J=siJ;t2|j=0;tlk=O;/*und*/*found*/t2j=si;j+;for(i=0;i<k;i+)for(i=0;i<j;i+)sk+i=t2i;si=tli;main()char sl80J="def35adh3kjsdf7&quo

35、t;printf("nThe original string is:%sn",s);fun(s);printf("nThe result is:%sn",s);二、程序改错题#include<stdio.h>#include<string.h>#define MAXLINE 20fun(char*pstr6)int i,j；char*p;for(i=0;i<5;i+)/*不，*found 不*不*/for(j=i+1;j<6;j+)if(strcmp(*(pstr+i),*(pstr+j)>0)p=*(pstr+

36、i);*fOUnd*/*(pstr+i)=*(pstr+j);(pstr+j)=p;)第 13套题一、程序填空题#include<stdio.h>void fun(char*s)int i,j,n;for(i=0;si!=0,;i+)/*found*/if(si>=40,&&si<=FILE*rf,*w f;charsl80,s240;rf=fopen("K:kO 1W24010001 in.dat"5"r");wf=fopen("K:kO 1W24010001 out.dat","w

37、");for(i=0;i<10;i+)fscanf(rf,"%s"s i);fscanf(rf,"%s",s2);fun(sl,s2);fprintf(wf,"%sn",s i);)fclose(rf);fclose(wf);)第25套题一、程序填空题#include<stdio.h>void fun(unsigned long*n)unsigned long x=0,i;int t;i=l；while(*n)/*found*/t=*n%10;/*found*/if(t%2!=0)x=x+t*i;i=i*1

38、0;*n=*n/10;)/*found*/*n=X;main()unsigned long n=l;while(n>99999999lln<0)printf("Please input(O<n<100000000):");scanf("%ld",&n);fun(&n);printf("nThe result is:%ldn",n);二、程序改错题#include<stdio.h>double fun(int n)double result=1.0;/*字 found*不*/If(n=

39、0)return 1.0;while(n>l&&n<170)/*字 不*，found*亭 亭*/result*=n;return result;)main()int n;printf("Input N:");scanf("%d",&n);printf("nn%d!=%lfnn"n,fun(n);三、程序编写题#include<stdio.h>#include<string.h>long fun(char*p)(/*以下代码仅供参考*/int i,len,t;/*len为串长，

40、t 为正负标识*/long x=0;len=strlen(p);if(pO=，)t=-l;len-;p+;else t=l;/*以下完成数字字符串转换为一个数字*/return x*t;)main()/*主函数*/char s6;void NONO();long n;printf("Enter a string:n");gets(s);n=fun(s);printf("%ldn",n);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;in ti;char s20J;long n

41、;fp=fopen("K:k0124010001in.dat","r");*/wf=fopen("K:k0124010001 Wout.dat","w");for(i=0;i<10;i+)fscanf(fp,"%s",s);n=fun(s);fprintf(wf,"%ldn",n);)fclose(fp);fclose(wf);第26套题一、程序填空题#include<stdio.h>double fun(int n)int i;double s,t;s=0

42、;/*found*不*/fbr(i=l;i<=n;i+)t=2.0*i;/*字 不 *sjjfou nd*字/s=s+(2.0*i-l)*(2.0*i+l)/(t*t);)return s;)main()int n=l;while(n<O)printf("Please input(n>O):");scanf("%d",&n);printf("nThe result is:%fn",fun(n);)二、程序改错题#include<stdio.h>int fun(char*str,char*subst

43、r)int i,j,k,num=0;/*Qund*/for(i 0。)for(j=i,k=0;substrk=strj;k+,j+)/*found*/if(substr|k+1 =0)num+;break;return num;main()(char str80,substr80;printf("Input a string:");gets(str);printf("Input a substring:");gets(substr);printf("%dn",fun(str,substr);三、程序编写题#include&It;std

44、io.h>#include<math.h>double fun(double eps)()main()double x;void NONO();printf("Input eps:");scanf("%lf",&x);printf("neps=%lf,PI=%lfn",x,fun(x);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;double x;fp=fopen("K:kO 1W24010001 in.

45、dat","r");wf=fopen("K:kO 1W24010001 out.dat","w");for(i=0;i<10;i+)fscanf(fp,"%lf",&x);fprintf(wf,"%lfn",fun(x);fclose(fp);fclose(wf);)第 27套题一、程序填空题*/#include<sldio.h>double fun(int n)int i,k;double s,t;s=0;/*亭*found*/k=l;for(i=l;i&l

46、t;=n;i+)/*不*fou nd*亭/t=2*i;s=s+k*(2*i-1 )*(2*i+l)/(t*t);/*found*/k=k*(-l);)return s;)main()int n=-l;while(n<O)printf("Please input(n>O):");scanf("%d",&n);printf("nThe result is:%fn",fun(n);)二、程序改错题#include<stdio.h>int fun(int m)int k=2;while(k<=m&

47、&(m%k)/*found*/k+;/*字字*nd*#*/if(m=k)return 1;else return 0;main()int n;printf("nPlease enter n:");scanf("%d"&n);if(fun(n)printf("YESn");else printf("NO!n");)三、程序编写题#include<stdlib.h>#include<stdio.h>void fun(int a,int n,int*max,int*d)()main

48、()int i,x20,max,index,n=10;void NONO();for(i=0;i<n;i+)xi=rand()%50;printf("%4d",xi);printf("n");fun(x,n,&max,&index);printf("Max=%5d,Index=%4dn",max,index);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。*/int i,x20,max,index,n=10,j;FILE*fp,*wf;fp=fopen(&q

49、uot;K:kO 1 24010001in.dat","r");wf=fopen("K:k0124010001out.dat","w");for(i=0;i<10;i+)for(j=0;j<n;j+)fscanf(fp,"%d,",&xj);fun(x,n,&max,&index);fprintf(wf,"Max=%d,Index=%dn",max,index);fclose(fp);fclose(wf);)第 28套题一、程序填空题#include

50、<stdio.h>double fun(double e)int i,k;double s,t,x;s=0;k=l;i=2;/*found*/x=3.0/4;/*found*/while(x>e)s=s+k*x;k=k*(-1);t=2*i;/*found*/x=(2*i+I)/(t*t);i+；)return s;)main()double e=le-3;printf("nThe result is:%fn",fun(e);)二、程序改错题#include<stdio.h>/*found*/double fun(int n)int a,b,c