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  • *** 自写代码:将十进制数以二进制和十六进制形式输出

    #include <iostream>
    #include <sstream>
    using namespace std;
    void printBit (unsigned int value)
    {
        unsigned int bits = sizeof(unsigned int) * 8;
        stringstream s;
        for (int i=0; i<bits; i++)
        {
            unsigned int temp;
            temp = value & (1<<bits-1-i);
            temp = temp >> bits-1-i;
            s << (temp)?'1':'0';
        }
        cout << s.str() << endl;
    }
    void printHex (unsigned int value)
    {
        unsigned int bits = sizeof(unsigned int) * 2;
        stringstream s;
        for (int i=0; i<bits; i++)
        {
            unsigned int temp;
            temp = value & (0xf << (bits-1-i)*4);
            temp = temp >> (bits-1-i)*4;
            s << (char)((temp>9)?('a'+temp-10):('0'+temp));
        }
        cout << "0x" << s.str() << endl;
    }
    int main()
    {
        printBit (52);
        printHex (0x465c3b);
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/superrunner/p/10165238.html
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