#include <stdio.h>
int main(){
double number;
int i;
scanf( "%lf", &number );
if ( number > 1 && number == (int) number ){
for ( i = 2; i < number; i++ ){
if ( (int) number % i == 0 ){
printf( "not prime" );
break;
}
}
if (i == number)
printf( "prime" );
}
if ( number>1 && (int) number != number )
printf( "not prime" );
if ( number <= 1 )
printf( "not prime" );
return 0;
}
原文:https://www.cnblogs.com/zmh-96493/p/13344027.html