将C代码转换为Java代码：sscanf的

Question

C代码我需要转换成Java是：

typedef struct 
{ 
    short ih; 
    .... 
} lsettings; 

int ldc_read_parameters(char *param_fnm, lsettings settings, short *image_height) 
{ 
    FILE *fp_param; 
    char line[256]; 
    fp_param = fopen(param_fnm, "r"); 

    if (fp_param) 
    { 
     do fgets(line, 256, fp_param); 
     while (line[0] == '#'); 

     sscanf(line, "%hd", &settings.ih); 
     *image_height = settings.ih; 
    } 
} 

我写的Java代码：

class lsettings 
{ 
    public short ih; 
    ..... 
} 

int ldc_read_parameters(String param_fnm, lsettings settings, short image_height[]) 
{ 
    Scanner fp_param;   
    String line; 
    fp_param = new Scanner(new BufferedReader(new FileReader(param_fnm))); 
    if (fp_param.hasNext()) 
    { 

     do 
     { 
      line=fp_param.nextLine(); 

     } while (line.charAt(0) == '#'); 
     Scanner s=new Scanner(line); 
     settings.ih=s.nextShort(); 
     image_height[0] = settings.ih; 
    } 
} 

我是否正确完成转换或者这里有什么不对。我不确定sscanf函数。请帮忙。谢谢。

Answer 1

人的sscanf

The scanf() function reads input from the standard input stream stdin, fscanf() reads input from the stream pointer stream, and sscanf() reads its input from the character string pointed to by str.

h Indicates that the conversion will be one of d, i, o, u, x, X, or n and the next pointer is a pointer to a short int or unsigned short int (rather than int).

http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Scanner.html#nextShort()

双方的sscanf和nextShort下一个值转换为短（在C版本你有符号短）。如果你想要具有相同的精度 - 把它改为int。在总是签署的Java中短。