#include
int main(void){
int Math,English,average;
printf("Enter Math,English:");
scanf("%d %d",&Math,&English);
average=(Math+English)/2;
if(90<=average<=100){
printf("excellence\n");
}
else if(80<=average<90){
printf("all right\n");
}
else if(70<=average<80){
printf("midding\n");
}
else if(60<=average<70){
printf("pass\n");
}else{
printf("fail\n");
}
return 0;
}
c里面 不能像数学一样表示大于小于关系，要用 逻辑与&&
例如 90<average<100 表示为 average>90&&average <100