View Compilation Error

0_0_21799976_12249.cpp: In function 'int main()':
0_0_21799976_12249.cpp:60:12: error: 'n' was not declared in this scope
         if(n == 0)
            ^
0_0_21799976_12249.cpp:65:12: error: 'n' was not declared in this scope
         if(n == 1)
            ^