1. 给定一个short型整数-1， 分别转换为int、unsigned short、unsigned int、float类型的数据；要求分别用cyuy十进制和十六进制形式打印输出各种操作的结果

以下是对应的代码实现：

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
    short s = -1;
    int i = s;
    unsigned short us = static_cast<unsigned short>(s);
    unsigned int ui = static_cast<unsigned int>(s);
    float f = s;

    cout << "int i = " << dec << i << " (0x" << hex << i << ")" << endl;
    cout << "unsigned short us = " << dec << us << " (0x" << hex << us << ")" << endl;
    cout << "unsigned int ui = " << dec << ui << " (0x" << hex << ui << ")" << endl;
    cout << "float f = " << fixed << setprecision(2) << f << endl;

    return 0;
}

输出结果为：

int i = -1 (0xffffffff)
unsigned short us = 65535 (0xffff)
unsigned int ui = 4294967295 (0xffffffff)
float f = -1.00

其中，`dec` 和 `hex` 是输出格式控制符，分别用于指定输出十进制和十六进制。`fixed` 和 `setprecision` 是控制浮点数输出格式的控制符，分别用于指定输出固定小数位数和小数位数。