how to make file alignment using fprintf in c?

Question

i have problem in aligning the file using C

program line :

    fprintf(fpscrip,"\n %ld , %ld , %ld , %ld , %ld , %ld , %ld , %ld , %ld , %ld , %ld",scripCode,tradeVolume,LTQ,LTR,OpenRate,CloseRate,HighRate,LowRate,TotBuyQty,To‌tSellQty,LowerCircuitLimit,UpperCircuitLimit)

file o/p

524667 , 7 , 1 , 34010 , 34500 , 34825 , 34500 , 34010 , 728 , 698 , 27865 
 533573 , 83625 , 50 , 14260 , 13655 , 13595 , 14440 , 13575 , 9202 , 15989 , 10880

The result should print like :-

524667 ,  7  , 1 ,... 
533573 ,83625,50,...

Well maybe you should calculate spaces and offsets when printing to make sure the alignment is okay.... Or you use a format specifier for fprintf to pad the numbers as you wish. Something like %05d should do. — RedX
– RedX, Commented Sep 11, 2013 at 5:36
Note that your format string has 11 format specifiers but you are passing 12 values. — Blastfurnace
– Blastfurnace, Commented Sep 11, 2013 at 5:58

Gangadhar · Accepted Answer · 2013-09-11 05:54:24Z

2

As like printf() You need to use some left and right alignments

printf() write output to stdout

fprintf() write output to the given output stream;

printf("%6d",num); // if num have 3 digits then adds three more spaces at left of num.

like this only you need to use with fprintf()

In your file you have only 6 digits in the maximum number.

replace all %ld with %7ld and add \n after every 3 or 4 numbers to get perfect allignment

fprintf(fpscrip,"\n %7ld , %7ld , %7ld , %7ld , %7ld , %7ld , %7ld , %7ld , %7ld , %7ld , %7ld ",scripCode,tradeVolume,LTQ,LTR,OpenRate,CloseRate,HighRate,LowRate,TotBuyQty,To‌tSellQty,LowerCircuitLimit,UpperCircuitLimit);

edited Sep 11, 2013 at 5:54

answered Sep 11, 2013 at 5:40

Gangadhar

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