c++语言输入某学生三个科目成绩,计算总成绩和平均分. 输入输出示例input...答:include <stdio.h> int main(){ int math,english,c_program;float sum,average;printf("input math,english,c_program:");scanf("%d%d%d",&math,&english,&c_program);sum=math+english+c_program;average=sum/3;printf("sum=%.0f, average=%.5f",sum,average);} ...