View Compilation Error

0_0_37859427_6463.cpp: In function 'int main()':
0_0_37859427_6463.cpp:30:39: error: 'c' was not declared in this scope
   for(int i = 1; i <= n; i ++) cin >> c[i];
                                       ^
0_0_37859427_6463.cpp:35:15: error: 'c' was not declared in this scope
    while(k <= c[i])
               ^
0_0_37859427_6463.cpp:44:7: error: 'c' was not declared in this scope
    if(c[i] > 0)
       ^