View Compilation Error

0_0_35112860_8950.cpp: In function 'int main()':
0_0_35112860_8950.cpp:13:20: error: unable to find numeric literal operator 'operator""i'
        for(int i = 0i<n2;i++ ){
                    ^
0_0_35112860_8950.cpp:13:20: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
0_0_35112860_8950.cpp:13:30: error: expected ';' before ')' token
        for(int i = 0i<n2;i++ ){
                              ^