ตัวอย่างโปรแกรมคำนวณเกรด

#include <stdio.h>
main()
{
int score;
printf("Programming by: Jirakorn Jullaka M.515 No.1\n");
printf("\n");
printf("---------------------------------------------------------------\n");
printf("\n");
printf("Enter your score : ");
scanf("%d",&score);
if (score > 100)
printf("Please Enter your Score Again.");
else if (score >= 80)
printf("Grade = A");
else if (score >= 70)
printf("Grade = B");
else if (score >= 60)
printf("Grade = C");
else if (score >= 50)
printf("Grade = D");
else if (score < 50)
printf("Grade = 0");
else printf("Please Enter your Score Again.");
getch();
}