how to print float value upto 2 decimal place without rounding off

Question

For example I want to print a value in c up to 2 decimal places  without rounding it off   like   a   91 827345  printf    2f   a     will print 91 83  but I want output to be 91 82 only  How to do it

User · Answer

i d suggest shorter and faster approach   printf    2f     signed long  fVal   100    0 01f      this way you won t overflow int  plus multiplication by 100 shouldn t influence the significand mantissa itself  because the only thing that really is changing is exponent

User · Answer

The only easy way to do this is to use snprintf to print to a buffer that s long enough to hold the entire  exact value  then truncate it as a string  Something like   char buf 2  DBL MANT DIG   DBL MAX EXP    snprintf buf  sizeof buf      f    int sizeof buf  x   char  p   strchr buf           beware locale-specific radix char  though  p 2 1    0  puts buf

[c] how to print float value upto 2 decimal place without rounding off

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