View Compilation Error

0_0_36263028_30873.cpp: In function 'int main()':
0_0_36263028_30873.cpp:8:5: error: expected initializer before 'int'
     int n;
     ^
0_0_36263028_30873.cpp:9:16: error: 'n' was not declared in this scope
     while(cin>>n)
                ^
0_0_36263028_30873.cpp:17:13: error: 'c' was not declared in this scope
             c[i]=(double)d[i]/(double)h[i];
             ^
0_0_36263028_30873.cpp:22:15: error: 'c' was not declared in this scope
            if(c[i]<c[j]){
               ^