#include
#include
void main()
{
int k;
int i1,i2,i3,i4;
printf("Please enter a data with 4 digits\n");
scanf("%d",&k);
i1 = k % 10;
k = (k - i1) / 10;
i2 = k % 10;
k = (k - i2) / 10;
i3 = k % 10;
k = (k - i3) / 10;
i4 = k;
printf("%d-%d-%d-%d\n",i4,i3,i2,i1); //每两个数字字符间有“-”
exit(0);
}
#include
int main(void){
char ss[100];
scanf("%4s",ss);
printf("%4s",ss);
return 0;
}