我的代码如下，大牛帮我看看为什么会超时，谢了：

#include <cstdio>
#include <cmath>
#include <iostream>

using namespace std ;

int main()
{
    char c1 , c2 , c ;
    float t , d , h , e ;
    freopen( "3299.in" , "r" , stdin ) ;
    freopen( "3299.out" , "w" , stdout ) ;
    scanf( "%c" , &c1 ) ;
    while ( c1 != 'E' )
    {
          scanf( " %f %c %f" , &t , &c2 , &d ) ;
          if ( c1 == 'D' ) swap( t , d ) ;
          e = 6.11 * exp (5417.7530 * ((1/273.16) - (1/(d+273.16)))) ;
          h = t + 0.5555*( e - 10.0 ) ;
          printf( "T %.1f D %.1f H %.1f\n" , t , d , h ) ;
          scanf( "%c" , &c1 ) ;
          scanf( "%c" , &c1 ) ;
    }    
}