C语言的goto err

前言：

最近在阅读某康的代码时，遇到了goto err，然后发现在c++中没有这个用法，因此找个c++支持的语法做替换。

C语言中goto err的用法：

#include 
 
int main()
{
   int input_num = 10;
   int num_1 = 2;
   int num_2 = 4;
   if (input_num % num_1 == 0)
   {
      printf("input num can be divided by 2.\n");
   }
   else
   {
      printf("input num can not be divided by 2.\n");
      goto err;
   }
   if (input_num % num_2 == 0)
   {
      printf("input num can be divided by 4.\n");
   }
   else
   {
      printf("input num can not be divided by 4.\n");
      goto err;
   }
   return 0;
 
err:
   printf("The input data does not meet the requirements.\n");
   return -1;
}

C++语言中do while的用法：

#include 
 
 
int main()
{
    int input_num = 10;
    int num_1 = 2;
    int num_2 = 4;
    do
    {
        if(input_num % num_1 == 0)
        {
            printf("input num can be divided by 2.\n");
        }
        else
        {
            printf("input num can not be divided by 2.\n");
            break;
        } 
        if(input_num % num_2 == 0)
        {
            printf("input num can be divided by 4.\n");
        }
        else
        {
            printf("input num can not be divided by 4.\n");
            break;
        }
        return 0;
    }while(0);
 
    printf("The input data does not meet the requirements.\n");
    return -1;
}

发现在c++的用法中，和python的用法很接近。还是习惯c++的语法。