What method can c language to write any number of Spaces (variable) file-CodePudding

Example: to be written to the file
The file content
Variable content 1 [space] [space]... [space] [space] variable content 2

Int test=30;//space number variable
Void fun (test);//call this function can be written test number space

My own test method:
Define a parameter macro
# define A (num) "% - # #" num "s"
Char line [200].
Char daybuff [200].//define two arrays

Sprintf (line, A (20), daybuff); //A () is the number can directly, just define A variable as A string handling
Fprintf (fp, line);//write file

//consult a big help, thank you

CodePudding user response:

With circulation fputc can't into space?
Fprintf can also be ~

CodePudding user response:

 

Void fun (int test) 
{
Char * buffer=(char *) malloc (test); 
Memset (buffer, 0, '); 
Fwrite (buffer, test, 1, fp); 
Free (buffer); 
}