《C语言程序设计》第6章习题答案.doc

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1、1、选择题（1）A（2）C（3）A（4）B（5）B（6）D（7）D（8）B（9）D（10）B2、填空题（1）a=10,b=20a=20,b=10（2）**pp=603、程序设计题（1）#includechar*month_name(intn);voidmain(){intn;printf("Pleaseenter1integer:");scanf("%d",&n);printf("%dmonth:%s",n,month_name(n));}char*month_name(intn){st

2、aticchar*name[]={"illegalmonth","Jan","Feb","Mar","Apr","May","Jun","July","Aug","Sept","Oct","Nov","Dec"};return((n<1

3、

4、n>12)?name[0]:name[n]);}（2）#include#defineN10sort(intdata[]){inti,j,min_a,temp;for(i=0;i

5、a+j)<*(data+min_a))min_a=j;if(min_a!=i){temp=*(data+min_a);*(data+min_a)=*(data+i);*(data+i)=temp;}}}main(){inti,j,data[N],temp;intmin_a;printf("Pleaseinput%dint:",N);for(i=0;i

6、)printf("%d",data[i]);}（3）#includevoidreverse(char*c);voidmain(){charstr[80];puts("Pleaseenter1string");gets(str);reverse(str);puts("Afterreversed");puts(str);}voidreverse(char*c){char*p,*q,temp;intsize=0;for(p=c;*p!='';p++)size++;size=size/2;

7、for(q=c,p--;q#includevoidsort(char*keyword[],intsize);voidprint(char*keyword[],intsize)voidmain(){char*keyword[]={"if","else","case","switch","do","whlie","for","break","continue"};sort(ke

8、yword,9);print(keyword,9);}voidsort(char*keyword[],intsize){inti,j,min_location;char*temp;for(i=0;i0)min_location=j;if(min_location!=i){temp=keyword[i];keyword[i]=key

9、word[min_location];keyword[min_location]=temp;}}}voidprint(char*keyword[],intsize){inti;for(i=0;ivoidfun_char(charstr1[],charstr2[],charstr3[]);voidmain(){charstr1[80],str2[80],str3[80],c,i;printf("

10、Pleaseenter2string:");scanf("%s%s",str1,str2);fun_char(str1,str2,str3);printf("Thirdstringis%s.",str3);}voidfun_char(char*str1,char*str2,char*str3){inti,j,k,flag;i=0,k=0;while(*(str1+i)!=