C程序设计教程与实验(吉顺如 陶恂)实验8答案.doc

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1、Sy8-1#includevoidmain(){inti;staticinta[8]={10,5,4,0,12,18,20,46};voidjhmaxmin();printf("Originalarray:");for(i=0;i<8;i++)printf("%5d",a[i]);printf("/n");jhmaxmin(a,8);printf("Arrayafterswapwingmaxandmin:");for(i=0;i<8;i++)printf("%5d",a[i]);printf("

2、");}voidjhmaxmin(intp[],intn){intt,*max,*min,*end,*q;end=p+n;max=min=p;for(q=p+1;q*max)max=q;if(*q<*min)min=q;}t=*max;*max=*min;*min=t;}Sy8-2#includeintlen(chars[]){char*p=s;while(*p!='')p++;returnp-s;}main(){chars[80];gets(s);printf(""%

3、s"include%dcharacters.",s,len(s));}Sy8-3#include#includevoidmain(){inti,a[26];charch,str[80],*p=str;gets(str);for(i=0;i<26;i++)a[i]=0;while(*p!=''){ch=*(p++);ch=ch>'A'&&ch<='Z'?ch+'a'-'A':ch;if('a'

4、

5、'A'<=ch<='Z')a[ch-'a']++;}for(i=0;

6、i<26;i++)printf("%2c",'a'+i);printf("出现的次数为:");for(i=0;i<26;i++)printf("%2d",a[i]);printf("");}Sy8-4#includemain(){inta[8],*p;inti,j,t,k;p=a;printf("Inputthenumbers:");for(i=0;i<8;i++)scanf("%d",p+i);t=*p;for(i=0;i<8;i++){for(j=i;j<8;j++)if(j==i

7、

8、*(p+j

9、)#includechnum(char*p);voidmain(){chars[6];intn;gets(s);if(*s=='-')n=-chnum(s+1);elsen=chnum(s);printf("%d",n);}chnum(char*p){intnum

10、=0,k,len,j;len=strlen(p);for(;*p!='';p++){k=*p-'0';j=(--len);while(j-->0){k=k*10;}num=num+k;}return(num);}Sy8-6#includemain(){inti,k=0;chara[80],b[80],*p;p=a;gets(p);while(*p){for(i=1;p[i-1]!='';p++,k++,i++){if(k%4==0){b[k]='';k++;}b[k]=*p;}}b[k]='';

11、puts(b);}Sy8-7#includevoidmain(){chars[30],*p=s;inta,*q=&a,i;gets(s);*q=0;for(;*p!='';p++)if(*p>='0'&&*p<='9')*q=(*q)*10+(*p-'0');printf("字符中的数字为：%d",a);}Sy8-8#includezlrjm(char*Z){char*A=Z;while(*A!=''){if('a'<=*A<='z'

12、

13、'A'<=*A<='Z'){*A=*

14、A+3;if(*A>'Z'&&*A<'a'

15、

16、*A>'z')*A=*A-26;}++A;}}zlrJm(char*Z){char*A=Z;while(*A!=''){if('a'<=*A<='z'

17、

18、'A'<=*A<='Z'){*A=*A-3;if(*A>'Z'&&*A<'a'

19、

20、*A