10. Device files

1 #include <stdio.h>
 2 #include <unistd.h>
 3 #include <termio.h>
 4 #include < string .h>
 5  
6  void TestIoflag()
 7  {
 8      struct termio old, new ;
 9      char szBuf [ 100 ];
 10      
11      ioctl(STDIN_FILENO,TCGETA,&old); // Get the current attribute 
12      
13      new = old; // Backup attribute
 14      
15      // Enter the character to uppercase and lowercase. For more attributes, see 2 
16      new .c_iflag | =IUCLC;
 17      
18      ioctl(STDIN_FILENO,TCSETA,& new ); // set to the current property 
19      
20      scanf( " %s " ,szBuf);
 21      
22      printf( " szBuf:%s\n " ,szBuf);
 23      
24      ioctl(STDIN_FILENO,TCSETA,&old); // Restore previous properties 
25      
26  }
 27  
28  int main()
 29  {
 30      TestIoflag();
 31      return  0 ;
 32 }

1. Device file operation process

 

 

2. Common property settings