for (int i =0 ; i < 10 ; i++ )
{
   //输入成绩的函式或程式码
}

int iPerson;
printf("%s","需要输入几个人的成绩?  " );
scanf("%d", iPerson);

for (int i =0 ; i < iPerson ; i++ )
{
   //输入成绩的函式或程式码
}

int iPerson;
BOOL fContinue;

while (fContinue)
{
   //输入成绩的函式或程式码

   //是否要继续输入下一组
   printf("%s%d\%s\n", "目前已经输入", iPerson,"组成绩");
   printf("%s","是否要继续输入下一组? 0 = No, 1 = Yes :");
   scanf("%d", fContinue);
}