>>650

#include<stdio.h>
int main(vold){
int hairetsu[99],i,n=9326;
for(i=0;i<sizeof(hairetsu)/sizeof(hairetsu[0])&&n!=0;i++){
do printf("%d:正数を、入れろ！！",i),scanf("%d",&n);while(n<0);
hairetsu[i]=n;
}
do printf("最後に、もう一度、正数を、入れろ！！"),scanf("%d",&n);while(n<=0);
for(i-=2;i>=0;i--)if(hairetsu[i]==n)printf("%d\n",i);
}