C语言程序设计第5篇习题答案

《C语言程序设计第5篇习题答案》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、1.选择题（1）C（2）D（3）C（4）B（5）A（6）A（7）A（8）B（9）A（10）B（11）A（12）A2.填空题（1）整型（2）值传递地址传递（3）全局变量局部变量（4）自动变量静态变量寄存器变量外部变量（5）自动变量（6）15300（7）8121（8）x=3,y=4,n=7（9）563.程序设计题（1）#includeintgcd_recursion(inta,intb);voidmain(){inti,j;puts("Pleaseenter2integer");scanf("%d,%d",&i,&j);if(i<0

2、

3、j

4、<0){puts("DataError!Pleaseenter2integer");scanf("%d,%d",&i,&j);}elseprintf("gcd(%d,%d)=%d",i,j,gcd_recursion(i,j));}intgcd_recursion(inta,intb){intc,d;if(a

5、includeintdelete_char(charc,charstr[]);voidmain(){charstr[10],c,i;puts("Pleaseenterastring:");gets(str);puts("Pleaseenteracharyouwanttodelete:");c=getchar();puts("Beforedeleted:");puts(str);puts("Afterdeleted:");i=delete_char(c,str);puts(str);printf("Thereare%dcharacter

6、sdeleted.",i);}intdelete_char(charc,charstr[]){inti,j,total,k,sum;i=0;total=0;while(str[i]!=''){k=i;sum=0;while(str[k]==c){k++;sum++;}total=total+sum;if(str[i]==c){for(j=i;str[j+sum]!='';j++)str[j]=str[j+sum];str[j]='';}i++;}returntotal;}（3）#includeintmax(inta,intb)

7、;voidmain(){inti,j,k;puts("Pleaseenter3integer:");scanf("%d,%d,%d",&i,&j,&k);printf("maxis%d.",max(max(i,j),k));}intmax(inta,intb){if(a>b)returna;elsereturnb;}（4）#includevoidint_string(longa,charstr[]);voidreverse(charc[],intsize);voidinsert_space(charc[],intsize);voidm

8、ain(){longi;charstr1[10];puts("Pleaseenter1longinterger:");scanf("%d",&i);int_string(i,str1);printf("digitalstringis%s",str1);}voidint_string(longa,charstr[]){inti=0;while(a!=0){str[i]=a%10+'0';a=a/10;i++;}str[i]='';insert_space(str,i);}voidinsert_space(charc[],intsize){inti;c

9、[2*size-1]='';for(i=2*(size-1);i>=2;i-=2){c[i]=c[i/2];c[i-1]='';}}（5）#includelongfacto(longx);main(){inta;longfactorial;printf("Pleaseenterainteger:");scanf("%d",&a);factorial=facto(a);printf("The%d'sjiecengis:%ld",a,factorial);}longfacto(longx){if(x==1)return1;el

10、sereturn(x*facto(x-1));}（6）#inclu