...总分,名次85分以上百分比,以学生名字为菜单答:int i, snum, gt85_count1, gt85_count2, gt85_count3, gt85_count4, gt85_count5, gt85_countaverage;FILE*infile;char s[256];snum=0;gt85_count1 = gt85_count2 = gt85_count3 = gt85_count4 = gt85_count5 = gt85_countaverage = 0;infile=(FILE*)fopen("data.txt",...