# include <stdio.h>
# include <stdlib.h>
# include <math.h>
int is_prime(int num)
{
int i = 0;
for (i = 0; i < sqrt(num); i++);
{
if (num%i == 0)
return 0;
}
return 1;
}
int main()
{
int a = 0;
int ret = 0;
printf("请输入一个数字:");
scanf("%d", &a);
ret = is_prime(a);
if (ret == 1)
printf("是素数!\n");
else
printf("不是素数!\n");
system("pause");
return 0;
}
# include <stdlib.h>
# include <math.h>
int is_prime(int num)
{
int i = 0;
for (i = 0; i < sqrt(num); i++);
{
if (num%i == 0)
return 0;
}
return 1;
}
int main()
{
int a = 0;
int ret = 0;
printf("请输入一个数字:");
scanf("%d", &a);
ret = is_prime(a);
if (ret == 1)
printf("是素数!\n");
else
printf("不是素数!\n");
system("pause");
return 0;
}