c++ iterate through map and write code example
Example 1: how to iterate through a map in c++
//traditional way (long)
for(map<string,int>::iterator it=m.begin(); it!=m.end(); ++it)
if(it->second)cout<<it->first<<" ";
//easy way(short) just works with c++11 or later versions
for(auto &x:m)
if(x.second)cout<<x.first<<" ";
//condition is just an example of use
Example 2: cpp goiver all the map values
map<string, int>::iterator it;
for (it = symbolTable.begin(); it != symbolTable.end(); it++)
{
std::cout << it->first // string (key)
<< ':'
<< it->second // string's value
<< std::endl;
}