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  1. #include <fcntl.h>
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. #include <string.h>
  5. #include <unistd.h>
  6. #ifndef NULL
  7. #define NULL   ((void *) 0)
  8. #endif
  9.  
  10. char* ext;
  11.  
  12. char *remove_ext (char* mystr) {
  13.     char *retstr, *lastdot, *lastsep;
  14.     char dot = '.';
  15.     char slash = '/';
  16. 	char *temp;
  17.     if (mystr == NULL)
  18.     return NULL;
  19.     if ((retstr = (char *)malloc (strlen (mystr) + 1)) == NULL)
  20.     return NULL;
  21.     strcpy (retstr, mystr);
  22.     lastdot = strrchr (retstr, dot);
  23.     lastsep = strrchr (retstr, slash);
  24.     if (lastdot != NULL) {
  25.         if (lastsep != NULL) {
  26.             if (lastsep < lastdot) {
  27. 				*temp = *lastdot;
  28.                 ext = (char *)malloc (strlen(temp)+1);
  29.                 strcpy (ext, temp);
  30.                 *lastdot = '\0';
  31.             }
  32.         }
  33.         else {
  34.             // Has extension separator with no path separator.
  35.             *lastdot = '\0';
  36.         }
  37.     }
  38.     // Return the modified string.
  39.     return retstr;
  40. }
  41.  
  42. int main(int argc, char* argv[]){
  43.     char buf[128];
  44.     int infile,fileread,outfile;
  45. 	infile = open(argv[1], O_RDONLY);
  46.     char *filename,*newfile;
  47.     filename = (char *)malloc(strlen(argv[1]+1));
  48.     filename = remove_ext(argv[1]);
  49.     newfile = (char *)malloc(strlen(argv[1]+3));
  50. 	int linecount=0;
  51.     int filecounter = 0;
  52.     while(fileread=read(infile, buf, sizeof(buf))>0)
  53.     {
  54.         sprintf(newfile,"%c%d%c",*filename,filecounter,*ext);
  55. 		outfile = open(newfile, O_CREAT | O_APPEND | O_RDWR);
  56.         while(linecount<500)
  57.         {
  58.             if(fileread>0)
  59.             {
  60.                 write(outfile, buf, sizeof(buf));
  61.                 linecount++;
  62.                 fileread=read(infile, buf, sizeof(buf));
  63.             }
  64.         }
  65.         filecounter++;
  66. 		close(outfile);
  67. 		newfile = NULL;
  68.     }
  69.  
  70.     // lets open the input file
  71. 	close(infile);
  72. 	return 0;
  73. }
  74.  
Runtime error #stdin #stdout 0s 2156KB
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stdin
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#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef NULL
#define NULL   ((void *) 0)
#endif

char* ext;

char *remove_ext (char* mystr) {
    char *retstr, *lastdot, *lastsep;
    char dot = '.';
    char slash = '/';
	char *temp;
    if (mystr == NULL)
    return NULL;
    if ((retstr = (char *)malloc (strlen (mystr) + 1)) == NULL)
    return NULL;
    strcpy (retstr, mystr);
    lastdot = strrchr (retstr, dot);
    lastsep = strrchr (retstr, slash);
    if (lastdot != NULL) {
        if (lastsep != NULL) {
            if (lastsep < lastdot) {
				*temp = *lastdot;
                ext = (char *)malloc (strlen(temp)+1);
                strcpy (ext, temp);
                *lastdot = '\0';
            }
        }
        else {
            // Has extension separator with no path separator.
            *lastdot = '\0';
        }
    }
    // Return the modified string.
    return retstr;
}

int main(int argc, char* argv[]){
    char buf[128];
    int infile,fileread,outfile;
	infile = open(argv[1], O_RDONLY);
    char *filename,*newfile;
    filename = (char *)malloc(strlen(argv[1]+1));
    filename = remove_ext(argv[1]);
    newfile = (char *)malloc(strlen(argv[1]+3));
	int linecount=0;
    int filecounter = 0;
    while(fileread=read(infile, buf, sizeof(buf))>0)
    {
        sprintf(newfile,"%c%d%c",*filename,filecounter,*ext);
		outfile = open(newfile, O_CREAT | O_APPEND | O_RDWR);
        while(linecount<500)
        {
            if(fileread>0)
            {
                write(outfile, buf, sizeof(buf));
                linecount++;
                fileread=read(infile, buf, sizeof(buf));
            }
        }
        filecounter++;
		close(outfile);
		newfile = NULL;
    }
    
    // lets open the input file
	close(infile);
	return 0;
}
stdout
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https://ideone.com/nJxRSY
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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