#include "stdio.h"
#include "stdlib.h"
int main()
{
    int prs,i,j;  /* i是计数器 */
   
    printf("Please input the person how mang you want:");
    scanf("%d",&prs);
     int *date=(int *)malloc(sizeof(int)*prs);
    if(date==NULL) exit(1);
    for(i=1;i<prs;i++)  /* error C2065: 'P' : undeclared identifier */
        *(date+i-1)=i;               /* error C2446: '<' : no conversion from 'int *' to 'int' */
                              /* error C2040: '<' : 'int' differs in levels of indirection from 'int *' */

    i=1;
    while(prs!=1)
    {
        i++;
        if(i%3==0)
        {   if(prs==2)
            printf("\nThe last people's number is :%d\n",*(date+1));
            for(j=i;j<prs;j++)
            *(date+j)=*(date+j+1);
            prs--;i=1;
        }
    }
    //printf("\nThe last people's number is :%d\n",*p);
    return 0;
}

#include<stdio.h>
main()
{
    int i,k,m,n,num[50],*p;
    printf("input number of person:n=%");
    scanf("%d",&n);
    p=num;
    for(i=0;i<n;i++)
        *(p+i)=i+1;
    i=0;
    k=0;
    m=0;
    while(m<n-1)
    {
        if(*(p+i)!=0)k++;
        if(k==3)
        {
            *(p+i)=0;
            k=0;
            m++;
        }
        i++;
        if(i==n)i=0;
    }
    while(*p==0)p++;
    printf("The last one is No. %d\n",*p);
}