View Compilation Error

0_0_35301277_18652.cpp: In function 'int main()':
0_0_35301277_18652.cpp:16:19: error: 'b' was not declared in this scope
         a[i]=a[i]*b+c;
                   ^
0_0_35301277_18652.cpp:23:13: error: redeclaration of 'int i'
         int i;
             ^
0_0_35301277_18652.cpp:13:17: note: 'int i' previously declared here
         for(int i=n+2;i<=2*n;i++){
                 ^
0_0_35301277_18652.cpp:30:1: error: expected '}' at end of input
 }
 ^