编程统计全班学生成绩。要求每次用键盘输入一个学生的2门分数,计算输 ...答:include<stdio.h> void main(){ int score1,score2,score,well,good,all,n;double score_ave;printf("请输入全班人数:\n");scanf("%d",&all);printf("依次输入成绩:\n");well=0;good=0;for(n=1;n<=all;n++){ scanf("%d,%d",&score1,&score2);score=score1+score2;score_...