#include <stdio.h> |
#include <stdlib.h> |
int num ( int i, int j); |
void pri ( int num); |
int main() |
{ |
int t; |
while (1) |
{ |
printf ( "Input a number\n" ); |
scanf ( "%d" ,&t); |
int j=2; |
pri (num (t,j)); |
} |
return 0; |
} |
void pri ( int num) |
{ |
if (num) |
printf ( "The number is sushu\n" ); |
else |
printf ( "The number isn't sushu\n" ); |
} |
int num ( int i, int j) |
{ |
return ((i==j || i==j-1) ? 1 :((i%j==0) ? 0 : (num (i,j+1)))); /*判断质数*/ |
} |