函数fun()的功能是：统计所有小于等于n的素数的个数,素数的个数作为函数值返回.这段程序是怎么达到目的
#include
int fun(int n)
{int i,j,count=0;
printf("\nThe prime number between 3 to %d\n",n);
for (i=3; i=i)
{count++; printf(count%15?"%5d":"\n%5d",i);}
}
return count;
}
main()
{int n=20,r;
r = fun(n);
printf("\nThe number of prime is :%d\n",r);
}
#include
int fun(int n)
{int i,j,count=0;
printf("\nThe prime number between 3 to %d\n",n);
for (i=3; i=i) 这里j>=i是起什么作用?
{count++; printf(count%15?"%5d":"\n%5d",i);}
}
return count;
}
main()
{int n=20,r;
r = fun(n);
printf("\nThe number of prime is :%d\n",r);
}