error please correct

int score;
char grade;
printf("please input a score\n");
printf("%d belongs to %c",score,grade);
Q,E,D I don't know which row is wrong, please help and I am novice.
#include must use <> or "".
#include <stdio.h> 

There are a couple of problems with line 8:
- You have an unbalanced parenthises.
- You're missing the colon in the first ternary opeator
It should be:
grade=score>=90?'A' : (score>=60?'B':'C');

PLEASE USE CODE TAGS (the <> formatting button) when posting code.

Ops, sorry. And the problem is denote a number as A,B,C. Greater than 90, A. And less than 60, B and C.
The first line is wrong. should be #include <stdio.h>

The conditional statement requires brackets, like this: (score>=90)
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