POJ 1503 Integer Inquiry 高精度加法

题意：输入若干个大整数，求其和。

#include <cstring>#include <iostream>using namespace std;int sum[111];char str[101];int main(){int i, j, len;while ( cin >> str ){len = strlen(str);if ( strcmp(str,"0") == 0 ) break;for ( i = 110, j = len - 1; j >= 0 && i >= 0; i--, j-- )sum[i] += str[j] - '0';}for ( i = 110; i > 0; i-- ){sum[i-1] += sum[i] / 10;sum[i] %= 10;}for ( i = 0; sum[i] == 0 && i < 111; i++ );if ( i == 111 ) cout << 0;for ( ;i < 111; i++ ) cout << sum[i];cout << endl;return 0;}