数组SCORE中存有英语成绩，按照0~59,60~74,75~84,85~100统计各分数段人数，存入N0，N1，N2，N3变量内-SCORE array of English achievement there, according to the 0 to 59, 60 ~ 74 and 75 ~ 84 and 85 ~ 100 count the number of the fraction of the deposited N0, N1, N2, N3 in the variable