...键盘输入学生c语言的成绩,编程计算其平均分,最高分和不及格率...答:include<stdio.h>int main(){float mymax=0,mymin=0,myavg=0,a[10],rate;int i,j,n;printf("Please input have how many student:");scanf("%d",&n);printf("Please input %d number:\n",n);for(i=0;i<n;i++) scanf("%f",&a[i]);for(i=0;i<n;i++){ if(a[i]...