sum没有初始化为0scanf("%f",&score[i]); //float输入用%fmin,max没有初始化,改为if(i==0 || max < score[i])max = score[i];if(i==0 || min > score[i])min = score[i];
max和min,sum没有初始化,可以让max=min=score[0],sum=0,此外scanf中%lf换为%f