Thread: file size

hi friends,

thanx for different views on this.

i tried with ftell

size1=ftell(fp);
fprintf(fp,"%s %0.4f %0.4f\n",sampling,pos,rat);
size2=ftell(fp);

printf("%d",size2-size1);


then the optput is
176
203
230
257
284
311
355
..
..

but the way writing in to file like

2007-10-10;2:10:25 45 100
2007-10-10;2:10:26 145 100
2007-10-10;2:10:27 245 100

like wise writing into file.

my doubt is will fprintf return characters including space ?
ftell returning bytes or postion in the file?

can we calculate with printf no: of bytes written to file?
will the above code returning bytes?

hi friends

thanx for reply

size1=ftell(fp);
fprintf(fp,"%s %0.4f %0.4f",sampling,pos,rat);
size2[=ftell(fp);

printf("%s\n",size2-size1);

output :
176
203
230
257
284
311

my dought is fprintf returning characters including space?
what is the return value of ftell ..bytes ?
but the way iam writting into file is

2007-10-10;2:10:26 45 100
2007-10-10;2:10:27 145 100
2007-10-10;2:10:28 245 100

if fprintf returning chars means...by summing all the returns we can find the total length of the file.isn't it !

>my dought is fprintf returning characters including space?
Yes it does

>what is the return value of ftell ..bytes ?
Total size of the file from start to the current postion of the file pointer in the file. The ftell returns the value in bytes

>if fprintf returning chars means...by summing all the returns we can find the total length of the file.isn't it !
But what about '\n' char as mentioned before it might take 2 bytes on some machines.

ssharish2005

yes "\n" including in file......