View Compilation Error

0_0_31716756_328.cpp: In function 'int main()':
0_0_31716756_328.cpp:7:25: error: 'score' was not declared in this scope
            scanf("%d", &score[i]); 
                         ^
0_0_31716756_328.cpp:11:15: error: 'score' was not declared in this scope
            if(score[i] == grade)
               ^