第三章第43题

P124

#include<stdio.h>void index(int x,int a[],int n){int i,j=0;for(i=0;i<n;i++)printf("%d ",a[i]);printf("\n");for(i=0;i<n;i++){if(x==a[i])j++;}if(j==0)printf("x不存在\n");if(j!=0)printf("x存在\n");}int main(){int c[100];int N,i,b; char ch;do    {          printf("input N:");          scanf("%d",&N);          printf("input your number:\n");          for(i=0;i<N;i++)  scanf("%d",&c[i]);printf("input x:");          scanf("%d",&b);  index(b,c,N);        printf("是否继续？[y/n][y]");            while((ch=getchar())!='\n');        }while((ch=getchar())=='y'||ch=='\n');        return 0;    }