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#include 
   
    template
    
      class Factorial{public:	static int const vl = N * Factorial
     
      ::vl;};template<> class Factorial<1>{public:	static int const vl = 1;};template
      
        class FactorialSum{public:	static int const vl = Factorial
       
        ::vl + FactorialSum
        
         ::vl;};template<> class FactorialSum<1>{public: static int const vl = Factorial<1>::vl;};void main(){ int const N = 7; printf("%d的阶乘：%d\n", N, Factorial
         
          ::vl); printf("%d的阶乘之和：%d\n", N, FactorialSum
          
           ::vl);}
          
         
        
       
      
     
    
   

参考：http://www.cnblogs.com/winter-cn/archive/2009/09/05/1561094.html