View Compilation Error

0_0_18998069_283.cpp: In function 'int main()':
0_0_18998069_283.cpp:31:39: error: expected ';' before ':' token
             if(a[i]+a[n-i-1]!=t) break:
                                       ^
0_0_18998069_283.cpp:31:39: error: expected primary-expression before ':' token
0_0_18998069_283.cpp:34:30: error: expected ';' before ':' token
         else cout<<"No"<<endl:
                              ^