#include<stdio.h>
int main(void)
{
    int i;
    bool b=true;
    while(b)
    {   int c;
        c=scanf("%d",&i);
        printf("%d\n",c);
        if(c==1)
            b=false;

        else
            printf("your input wrong,you can input only a charactr,try again\n");
    }
    printf("the num is:%d",i);
    return 0;
}