View Compilation Error

0_0_14135599_3766.cpp: In function 'int main()':
0_0_14135599_3766.cpp:28:13: error: 'else' without a previous 'if'
             else if(n == 5)cal('*');cal('*');cal('-');cal('/');
             ^
0_0_14135599_3766.cpp:29:13: error: 'else' without a previous 'if'
             else if(n == 6)cal('*');cal('*');cal('/');cal('-');cal('-');
             ^
0_0_14135599_3766.cpp:30:13: error: 'else' without a previous 'if'
             else if(n == 7)cal('+');cal('+');cal('/');cal('+');cal('+');cal('+');
             ^
0_0_14135599_3766.cpp:31:13: error: 'else' without a previous 'if'
             else if(n == 8)cal('-');cal('*');cal('*');cal('*');cal('+');cal('+');cal('+');
             ^
0_0_14135599_3766.cpp:32:13: error: 'else' without a previous 'if'
             else if(n == 9)cal('+');cal('+');cal('+');cal('+');cal('+');cal('/');cal('+');cal('+');
             ^
0_0_14135599_3766.cpp:33:13: error: 'else' without a previous 'if'
             else if(n <= 12) {
             ^