Show two digits after decimal point in c

Question

Similar topic is already discussed in the forum  But I have some different problem in following code   double total  cin  gt  gt  total  cout  lt  lt  fixed  lt  lt  setprecision 2   lt  lt  total    If I give input as 100 00 then program prints just 100 but not 100 00  How can I print 100 00

User · Answer

The easiest way to do this  is using cstdio s printf  Actually  i m surprised that anyone mentioned printf  anyway  you need to include the library  like this      include lt cstdio gt   int main         double total      cin gt  gt total      printf    2f n   total       This will print the value of  total   that s what    and then  total does  with 2 floating points  that s what  2f does   And the  n at the end  is just the end of line  and this works with UVa s judge online compiler options  that is   g   -lm -lcrypt -O2 -pipe -DONLINE JUDGE filename cpp   the code you are trying to run will not run with this compiler options

User · Answer

It is possible to print a 15 decimal number in C   using the following    include  lt iomanip gt   include  lt iostream gt   cout  lt  lt  fixed  lt  lt  setprecision 15   lt  lt    The Real Pi is     lt  lt  real pi  lt  lt  endl  cout  lt  lt  fixed  lt  lt  setprecision 15   lt  lt    My Result Pi is     lt  lt  my pi  lt  lt  endl  cout  lt  lt  fixed  lt  lt  setprecision 15   lt  lt    Processing error is     lt  lt  Error of Computing  lt  lt  endl  cout  lt  lt  fixed  lt  lt  setprecision 15   lt  lt    Processing time is     lt  lt  End Time-Start Time  lt  lt  endl   getch     return 0

User · Answer

This will be possible with setiosflags ios  showpoint

User · Answer

Using header file stdio h you can easily do it as usual like c  before using   2lf set a specific number after   specifier   using printf     It simply printf specific digits after decimal point    include  lt stdio h gt   include  lt iostream gt  using namespace std  int main        double total 100     printf    2lf  total    this prints 100 00 like as C

User · Answer

cout  lt  lt  fixed  lt  lt  setprecision 2   lt  lt  total    setprecision specifies the minimum precision  So   cout  lt  lt  setprecision  2   lt  lt  1 2     will print 1 2  fixed says that there will be a fixed number of decimal digits after the decimal point  cout  lt  lt  setprecision  2   lt  lt  fixed  lt  lt  1 2    will print 1 20

[c++] Show two digits after decimal point in c++

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