#include    <stdio.h>

void main()
{
static int    ary[10]={2,4,1,3,5,7,9,6,8,0};
static int    target=5;
int     i,no;

    no= -1;
    for(i=0;i<10;i++){
        if(ary[i]==target){
            no=i;
            break;
        }
    }

    if(no>=0){
        printf("target is ary[%d]\n",no);
    }
    else{
        printf("target not found\n");
    }
}