View Compilation Error

0_0_38271232_4399.cpp: In function 'int main()':
0_0_38271232_4399.cpp:12:17: error: could not convert 'str.std::basic_string<_CharT, _Traits, _Alloc>::operator=<char, std::char_traits<char>, std::allocator<char> >(((const char*)"FIFO"))' from 'std::basic_string<char>' to 'bool'
    if(str="FIFO"){
                 ^