Submission #76631257

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

int main() {
  string str;
  cin >> str;
  cout << "";
  for(int i = 0; i < str.size(); i++){
    if('0' <= str.at(i) && str.at(i) <= '9'){
      cout << str.at(i);
    }
  }
  cout << endl;
}

Submission Info

Compile Error

./Main.cpp: In function 'int main()':
./Main.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |   for(int i = 0; i < str.size(); i++){
      |                  ~~^~~~~~~~~~~~

Judge Result