View Compilation Error

0_0_28953331_24674.cpp: In function 'int main()':
0_0_28953331_24674.cpp:152:25: error: 'op' was not declared in this scope
     printf("Case #%d: ",op);
                         ^
0_0_28953331_24674.cpp: At global scope:
0_0_28953331_24674.cpp:159:1: error: expected declaration before '}' token
 }
 ^