Code ຈັດ Grade

Code ຈັດ Grade ຮຽນພິມຕາມນີ້ ແລ້ວລະຄອມພາຍ ແລະລັນເບິ່ງ (ບໍ່ເຂົ້າໃຈຖາມໄດ້ຕອນໄປ ຮຮ)

#include "stdio.h"
void main ()
{
int score;
    printf("please input your score: ");
scanf("%d",&score);

if(score>=80)
    printf("You are Grade A");
else if ((score>=75)&&(score<=79))
     printf("You are Grade B+");
else if ((score>=70)&&(score<=74))
    printf("You are Grade B");
else if ((score>=65)&&(score<=69))
    printf("You are Grade C+");
    else if ((score>=60)&&(score<=64))
    printf("You are Grade C");
    else if ((score>=55)&&(score<=59))
    printf("You are Grade D+");
    else if ((score>=50)&&(score<=54))
    printf("You are Grade D");
    else
    printf("You are Grade F");
    printf("\nGoodbey");
    getchar();
    return 0;
 
}