可是這題怎麼不會？？
#include <stdio.h>
main()
{
int i;
float score, sum;
sum = 0.0;
i = 0;
printf("Enter next score (negative to quit ) : ");
scanf("%f",&score);
while (score >= 0)
{
sum += score;
i++;
printf("Enter next score (negative to quit ) : ");
scanf("%f",&score);
}
printf("Total %d scores counted\n",i);
printf("Total score : %8.2f \n",sum);
printf("Average score : %8.2f \n",sum/i);
}
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