Many time i tried to use the for each loop in way described as follow but it doesn’t work in my vs can any plz tell me what changes i need to do to make it workable in my vs code
{
map <int,int> smallest_prime_factor ;
smallest_prime_factor[2] = 2 ;
smallest_prime_factor[3] = 3 ;
smallest_prime_factor[4] = 2 ;
for ( auto [ num , factor ] : smallest_prime_factor ) {
cout << num << ' ' << factor << '\n' ;
}
}
It gives me following error
I use this
for ( pair<int,int> i : smallest_prime_factor ) {
cout << i.first << ' ' << i.second << '\n' ;
}
or STL Iterator
Thanks for replying
but i know this way of iterating
but if you see the way i mentioned above is handy over other ways
thats why i asked this in hope that if anyone knows will help .
for (const auto& [key, value] : smallest_prime_factor){
cout << key << ":" << value << endl;
}
Is your compiler configured to use C++17?
I was literally waiting for your answer. Even I didn’t get what’s happening 
it is not working .
Giving same error .
Thanks! Please post the entirety of the code you are trying to compile.
Ugh, windows 
Let’s try compiling manually with your MING. From a command-prompt, something like:
C:\MinGW\bin\gcc.exe -std=c++17 <path to A.cpp>
where <path to A.cpp> should be replaced appropriately.
Edit:
"cppStandard": "c++17", perhaps?
I am not good at using cmd but still i tried it says permission denied on compiling
Also i tried to by chainging gnu17 to c++17 but didn’t worked .
“Permission denied” is something else entirely. What did you type exactly and what was the precise output?
A screenshot will do, here 
I tried a lot to compile it using cmd but this time i was not able to do it .
as I am unknown to cmd , i don’t know the proper way of using cmd .
Try running CMD as Run as Administrator.