整数1-100以内，奇数的和、偶数的和。。。。
   #include "stdio.h"
       main()
      { int sum,num,i.
        for ( i=1; i<=100; i++)
         { if ( i%2==0)
              sum=sum+i;
           else   num=num=i;   
          }
      }
         printf ( "%d,%d,%"; sum, num)