1001 字符串处理

#include<iostream> #include<string> #include<cmath> using namespace std; int main() { int a, b; cin >> a >> b; if (a + b < 0) cout << "-"; int c = fabs(a + b); string s = to_string(c); for (int i = 0;i < s.size();i++) { cout << s[i]; if ((s.size() - i - 1) % 3 == 0 && (s.size() - i - 1) != 0) cout << ","; } return 0; }