#include void main(){int score;scanf("%d",&score);//输入成绩if(score>=90) printf("优秀");else if(score>=70&&score<90) printf("良好");else if(score>=60&&score<70) printf("及格");else if(score<60) printf("不及格!");}
void main(){ int scrnum; printf("请输入考试成绩"); scanf("%d",&scrnum); if(scrnum>=90){ printf("优秀"); }else if(scrnum>=70 && scrnum<90){ printf("良好"); }else if(scrnum>=60 && scrnum<70){ printf("及格"); }else if(scrnum<60){ printf("不及格!"); }}