这个报错是咋回事啊
#include <stdio.h>
#include <math.h>
int main()
{
int a , m;
scanf( "%d\n", &a );
m = sqrt(a);
if( a <=1000 )
{
printf( "%.2f", m );
}
else
{
printf( "请重新输入:\n" );
}
return 0;
}
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/593098098876114.png "#left")