hex2decimal/hex2decimal.cpp

#define _CRT_SECURE_NO_DEPRECATE
#include <iostream>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>

int main(int argc, char const* argv[])
{

    if (argc != 2)
    {
        printf("%s 十六进制的数值\n", argv[0]);
        return -1;
    }

    uint64_t input_num = 0;
    sscanf(argv[1], "0x%x", &input_num);


    int8_t int8_t_value = (int8_t)input_num;
    int16_t int16_t_value = (int16_t)input_num;
    int32_t int32_t_value = (int32_t)input_num;
    int64_t int64_t_value = (int64_t)input_num;
    printf("input : 0x%x\n", input_num);
    printf("========================================\n");
    printf("= int8_t_value : %d\n", int8_t_value);
    printf("= int16_t_value: %d\n", int16_t_value);
    printf("=int32_t_value: %d\n", int32_t_value);
    printf("= int64_t_value: %ld\n", int64_t_value);
    printf("=\n");

    return 0;
}