View Compilation Error

0_0_17765105_8442.cpp: In function 'int main()':
0_0_17765105_8442.cpp:19:9: error: expected ';' before 'else'
         else if(n==6)   printf("1 / 2\n3 / 4\n5 - 7\n9 - 8\n6 * 10\n");
         ^