View Compilation Error

0_0_15520001_9845.cpp: In lambda function:
0_0_15520001_9845.cpp:24:36: error: expected '{' before ';' token
             if(i%2 == 0) tmp -= [i];
                                    ^
0_0_15520001_9845.cpp: In function 'int main()':
0_0_15520001_9845.cpp:24:30: error: no match for 'operator-=' (operand types are 'double' and 'main()::<lambda()>')
             if(i%2 == 0) tmp -= [i];
                              ^