c语言输入成绩怎么判断等级

#include <stdio.h>

int main()

{

    int score;

    scanf("%d",&score);

    if(score>=90)printf("A");

    else if(score>=80)printf("B");

    else if(score>=70)printf("C");

    else if(score>=60)printf("D");

    else printf("E");

    return 0;

}