View Compilation Error

0_0_21848934_9703.cpp: In function 'int main()':
0_0_21848934_9703.cpp:23:10: error: 'else' without a previous 'if'
         }else{
          ^
0_0_21848934_9703.cpp:24:16: error: 'n' was not declared in this scope
             if(n%2==1){
                ^
0_0_21848934_9703.cpp: At global scope:
0_0_21848934_9703.cpp:31:1: error: expected declaration before '}' token
 }
 ^