#include<stdio.h>
void?main()
{
?int?n;
?int?sum=0,count=0;
?printf("input?integers:");
?do
?{
??scanf("%d",&n);
??if(n>0?&&?n%2!=0)
??{
????sum+=n;
????count++;
??}
?}while(n);
?printf("sum=%d?average=%.2f\n",sum,sum/(count*1.0));
}

#include<stdio.h>int?even(int?num)
{
?return?num%2;
}int?main()
{
?int?sum=0,num=0;
?printf("Input?integers:");
?while?(1)
?{
??scanf("%d",&num);
??if?(num<=0)
???break;
??if?(even(num))
???sum+=num;
?}
?printf("The?sum?of?the?odd?numbers?is:%d\n",sum);
?return?1;
}