// "1437983724598723459872349857982347598234759"
// "234789235798345798347589347539"
#include <iostream>
#include <vector>
using namespace std;
string addString(string s1, string s2) {
vector<int> A, B, C;
for (int i = s1.size() - 1; i >= 0; i--)
A.push_back(s1[i] - 48);
for (int i = s2.size() - 1; i >= 0; i--)
B.push_back(s2[i] - 48);
if (A.size() < B.size()) addString(s2, s1);
int t = 0;
for (int i = 0; i < A.size(); i++) {
t += A[i];
if (i < B.size()) t += B[i];
C.push_back(t % 10);
t /= 10;
}
if (t > 0) C.push_back(t);
string res = "";
for (int i = C.size() - 1; i >= 0; i--)
res += to_string(C[i]);
return res;
}
int main() {
string s1, s2;
cin >> s1 >> s2;
cout << addString(s1, s2) << endl;
return 0;
}
大数相加C++模版(高精度加法)
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转载自blog.csdn.net/qq_43827595/article/details/105325027
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