Question

C语言编程,从键盘输入50个学生的考试成绩,统计成绩在80~90范围内的人数以及不及格的人数

Answer 1

#include int main() { int i,sc,grade[5] = {0}; char s[][7] = {"优秀","优良","良好","及格","不及格"}; printf("请输入成绩:"); while(scanf("%d",&sc) == 1) {//Ctrl + Z结束输入过程 if(sc = 90) ++grade[0]; else if(sc >= 80 && sc <=89) ++grade[1]; else if(sc = 70) ++grade[2]; else if(sc = 60) ++grade[3]; else if(sc >= 0 && sc < 60) ++grade[4]; else printf("不合理数据，请重新输入。\n"); printf("请输入成绩:"); } for(i = 0; i < 5;++i) if(grade[i]) printf("%s成绩，%d个人。\n",s[i],grade[i]); printf("\n"); return 0;}