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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.     string a, b, c, t;
  7.     cin >> a >> b;
  8.     int n=b.size(), nho=0, them;
  9.     if (a.size()>b.size())                // Khúc này là em cho chiều dài 2 xâu = nhau
  10.     {
  11.         them=a.size()-b.size();
  12.         for (int i=1; i<=them; i++) t+='0';
  13.         b=b.insert(0, t);
  14.     }
  15.     if (b.size()>a.size())
  16.     {
  17.         them=b.size()-a.size();
  18.         for (int i=1; i<=them; i++) t+='0';
  19.         a=a.insert(0, t);
  20.     }
  21.     for (int i=a.size()-1; i>=0; i--)
  22.     {
  23.         int so, kt=0;
  24.         so=(a[i]-48)+(b[i]-48)+nho;
  25.         if (so>=10)
  26.         {
  27.             nho=1;
  28.             so=so-10;                   //Cái này là biến nhớ để cộng cho số sau
  29.             kt=1;
  30.         }
  31.         if (so<10&&kt!=1)
  32.             nho=0;
  33.         c+=(so+48);
  34.     }
  35.     for (int i=c.size(); i>=0; i--) cout << c[i] ;
  36. }
Success #stdin #stdout 0s 3460KB
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stdout
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333
https://ideone.com/iCVE6F
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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