View Compilation Error

0_0_24537293_17321.cpp: In function 'int main()':
0_0_24537293_17321.cpp:50:9: error: 'n' was not declared in this scope
      if(n==1) {
         ^
0_0_24537293_17321.cpp:54:9: error: 'n' was not declared in this scope
      if(n==2) {
         ^