C++ moving characters from one vector to another

i'm new to c++ and i was trying to create a program that reads file called symbols.txt, then it fills a vector with the symbols, then i wanted to take a chars that are in range [d;p] and move them to the second vector while erasing them in the first one.

int main(){  vector<char> sym1;  vector<char> sym2;  int p = 100, d = 80;  char x;  ifstream symbols("symbols.txt");      while (symbols >> x )      {          sym1.push_back(x);      }  for(int i = 0; i<sym1.size();i++){          if(sym1[i] < p && sym1[i] > d){              sym2.push_back(sym1[i]);              sym1.erase(sym1.begin()+i);              }            }  }  

when i do this the program works if there are no same characters, otherwise it only moves half of them and leaves other half untouched. its 5 in the morning and im still trying to figure this out :(

https://stackoverflow.com/questions/66020118/c-moving-characters-from-one-vector-to-another February 03, 2021 at 09:43AM