for (int i =0 ; i < 10 ; i++ )
{
   //輸入成績的函式或程式碼
}

int iPerson;
printf("%s","需要輸入幾個人的成績?  " );
scanf("%d", iPerson);

for (int i =0 ; i < iPerson ; i++ )
{
   //輸入成績的函式或程式碼
}

int iPerson;
BOOL fContinue;

while (fContinue)
{
   //輸入成績的函式或程式碼

   //是否要繼續輸入下一組
   printf("%s%d\%s\n", "目前已經輸入", iPerson,"組成績");
   printf("%s","是否要繼續輸入下一組? 0 = No, 1 = Yes :");
   scanf("%d", fContinue);
}