3_in windows, use the batchcompute file _ to remove the leading numbers in the C source code indicating the row number.

Paste in the gardenCodeSome people often paste the code with a line number in front of it, copy it, paste it into the code editor, and there are a lot of numbers in front of it.

Before compilation, You need to delete all these numbers before compilation, and delete dozens of lines of code. If there are thousands of lines of code, it will be troublesome.

Exp: C with a leading row numberSource code

1# Include <stdio. h>
2 
3 IntMain (IntArgc,Char** Argv)
4{
5Printf ("Hello world!");
6 
7 Return 0;
8}
 

If there is a simple way to remove the line numbers before the code, it will help improve learning efficiency. Since everyone knows programming, they will think of using programming methods.

This function is implemented. For example, you can use C to write a small number of read/write files.ProgramTo implement this function. But this is troublesome. Is there a simpler method?

The answer is: yes.

You can use the functions provided by the command line. Based on the above requirements, I use the command line to achieve a simple removal of the C language code in front of the row number batch processing. Batch Processing is given below

File Source Code:

 @ Echo   Off 

Title C language code removal of leading numbers Batch Processing
 Echo .
 Echo .
 Echo **************************************** ***********************
 Echo .
 Echo .
 Echo Welcome to -- C language code to remove leading digital batch processing -- Tool
 Echo .
 Echo .
 Echo Author: volcanol
 Echo Version: v0.0
 Echo QQ: 164498180
 Echo Email: lilinly225
 Echo Blog: http://www.cnblogs.com/volcanol/
 Echo .
 Echo .
 Echo **************************************** ************************
Echo .
 Echo .
 Echo Press any key to continue .........
 Echo .
 Echo .
 Pause > NUL

 ::  Accept user input file name  
  CLS 
 Echo .
 Echo Enter the complete path and file name (only the file name can be entered in the current folder ):
 Echo .
 Set /P file =

 ::  Determine whether a file exists  
  If   Exist % File % Goto Goon

 ::  The file to be edited does not exist. If prompted, exit.  
  Echo .
 Echo .
 CLS 
 Echo **************************************** **************************
 Echo .
 Echo .
 Echo The file you want to edit does not exist. Check whether the path and file name are correct!
 Echo .
 Echo Thanks for using the -- C language code to remove the leading digital batch processing -- Tool
 Echo .
 Echo Press any key to exit ................
Echo .
 Echo .
 Echo **************************************** **************************
 Pause > NUL
 Exit 

 ::  Execute the following statement if a file exists.  
  : Goon 
 Echo .> De_pre_num.c
 For /F "tokens = 2-30" % I in (% file %)Do   Echo % I % J % K % L % m % N % o % P % Q % R % S % T % u % % v % w % x % Y % z> de_pre_num.c
 CLS  
 Echo **************************************** **************************
 Echo .
 Echo .
 Echo The processed file is successfully processed and saved in : De_pre_num . C
 Echo .
 Echo Thanks for using the -- C language code to remove the leading digital batch processing -- Tool
 Echo .
 Echo Press any key to exit .........
 Echo .
 Echo .
 Echo **************************************** **************************
 Pause > NUL

Exp: Below is the C language code with leading numbers.

 1   /*  
  2  Strtoint: converts a string to an integer.
  3   */  
 4 # Include <stdio. h>
 5 Unsigned Long   Int Str_to_int ( Const   Char * Source );
 6   Int Main ( Int Argc Char * Argv [])
7 {
 8   Char STR [ 5 ] = "  1234  " ;
 9 Unsigned Long   Int Test;
 10 Test = str_to_int (STR );
 11 Printf ( " % D \ n  " Test );
 12   Return   0 ;
 13 }
 14   /*  
  15   Function:
  16   Converts a string consisting of 0-9 characters to an integer.
  17  Function prototype:
  18   Unsigned long int str_to_int (const char * Source)
  19   Function parameters:
  20   Char * Source: the first address of the string.
  21   Return Value:
  22   Int value after conversion
  23   Exception:
  24  When a null pointer is passed or the function cannot return the correct value
  25   */  
 26 Unsigned Long   Int Str_to_int ( Const   Char * Source)
 27 {
 28 Unsigned Long   Int Result = 0 ;
29   While ( '  \ 0  ' ! = * Source)
 30 {
 31 Result = (* Source + result- '  0  ' )* 10 ;
 32 ++ Source;
 33 }
34   Return Result/ 10 ;
 35 }

Exp: Below is the C language code after batch processing:

 /*  
Strtoint: converts a string to an integer.
  */  
# Include <stdio. h>
Unsigned Long   Int Str_to_int ( Const   Char * Source );
Int Main ( Int Argc Char * Argv [])
{
 Char STR [ 5 ] = "  1234  " ;
Unsigned Long   Int Test;
Test = str_to_int (STR );
Printf ( " % D \ n  " Test );
 Return   0 ;
}
 /*  
Function:
Converts a string consisting of 0-9 characters to an integer.
Function prototype:
Unsigned long int str_to_int (const char * Source)
Function parameters:
Char * Source: the first address of the string.
Return Value:
Int value after conversion
Exception:
When a null pointer is passed or the function cannot return the correct value
  */  
Unsigned Long  Int Str_to_int ( Const   Char * Source)
{
Unsigned Long   Int Result = 0 ;
 While ( '  \ 0  ' ! = * Source)
{
Result = (* Source + result- ' 0  ' )* 10 ;
++ Source;
}
 Return Result/ 10 ;
}

When I was learning Linux, I knew that there was a regular expression. It seemed like there was a regular expression in VB script or JScript, which could be used to process text files. I didn't know much about the command line before, now

It is found that the batch processing under Win is good and can implement many functions.