c++五进制数转换十进制数

Question

Answer 1

#include <iostream>
using namespace std;
int main()
{
    long long n,m = 0;
    int a[50],nmb=0;
    cin >> n; //输入5进制数
    while(n)
    {
        a[nmb++] = n%10;
        n/=10;
    }
    for (nmb-=1;nmb>=0;nmb--)
    {
        m = m*5 + a[nmb];
    }
    cout << m;
    return 0;
}