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MylesCLin 02-24-2005 12:14 PM
C: Getting program's output
 
Is there any way, in C, to execute another program AND get it's output?
I need to run wc -c to get the number of chars in a file.
Any ideas?

itsme86 02-24-2005 12:19 PM
Look at the popen() function.

Matir 02-24-2005 12:20 PM
Look into popen();.

Though a more portable way to do this would be:
Code:
long filelen(char *fname){
long len;
FILE *f=fopen(fname,"r");
fseek(f,0,SEEK_END);
len=ftell(f);
fclose(f);
return len;
}
Or something similar. Been a while since I've done that in C.

MylesCLin 02-24-2005 12:35 PM
You have fixed my problem, danke sehrs!

Matir 02-24-2005 05:06 PM
No problem. :) Just glad to help.


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