โปรแกรมตัดเกรด

#include <stdio.h>

#include <conio.h>

int main()

{

int score;

printf("Input score=");

scanf("%d",&score);

if(score>=0&&score<=100)

{ if(score>=80)

printf("score grade 4",score);

else if(score>=75)

printf("score grade 3.5",score);

else if(score>=70)

printf("score grade 3",score);

else if(score>=65)

printf("score grade 2.5",score);

else if(score>=60)

printf("score grade 2",score);

else if(score>=55)

printf("score grade 1.5",score);

else if(score>=50)

printf("score grade 1",score);

else

printf("score grade 0",score);

}

else

printf("&d error!!!",score);

getch();

}