string[] name={"景珍","林惠洋","成蓉","洪南昌","龙玉民","单江开","田武山","王三明"};
int [] score={90,65,88,70,46,81,100,68};
int sum =0,avg;
for(int i=0;i<name.Length;i++){
//记录名字和分数
string tname = name [i];