Hi to everyone;
I know just little about C and that was also learnt by reading book for
beginners i.e. "how to program in C" and also after joined your group that was
really helpful for beginners. I m doing OS course in Linux where I m not
understanding the command line. is it like DOS cmd line? And I am too confused
in cammand_line_arguments like argc and pointer argv. I want to know about each
and every thing about these, because of this i could not understand the below
code and similar of it.There are 2 files below.Can anybody explain this code
specially the main() function with its arguments?Pleaseeee........
Thanksssssss in Advance.
asma.
___________________________________________________________________
file1.c
# include "glob.h"
void sysfail(int rc,char *message)
{
perror(message);
exit(rc);
}
void usrfail(int rc,char *message)
{
fprintf(stderr,message);
exit(rc);
}
_________________________________________________________________________
file2.c
# include "glob.h"
int main(int argc,char *argv[])
{
FILE *in;
int count=0;
int ch;
if(argc<2)
usrfail(1,"Command requires a filename");
if((in=fopen(argv[1],"r"))== NULL)
sysfail(2,argv[1]);
whlie ((ch=getc(in))!=EOF)
if(ch=='\n')
count++;
fclose(in);
printf("%d\n",count);
return (0);
}
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