进制转换

标签：hex   space   lang   ima   octal   ios   ring   printf   转换   

#include<iostream>
using namespace std;

int main(){
    string s;
    cin >> s;
    
    cout << "Hex: 0x" << s << endl;
    int dec = 0, oct = 0;
    
    for(int i = 0; i < s.size(); i ++)
        dec = dec * 16 + (isalpha(s[i]) ? s[i] - ‘A‘ + 10 : s[i] - ‘0‘);
    
    printf("Decimal: %d\n", dec);
    
    int t = 1;
    while(dec){
        int x = dec % 8;
        oct = x * t + oct; 
        dec /= 8;
        t *= 10;
    }
    
    printf("Octal: %04d", oct);
    
    return 0;
}

进制转换

标签：hex   space   lang   ima   octal   ios   ring   printf   转换   

原文地址：https://www.cnblogs.com/tomori/p/13680195.html