Two decimal places using printf( )
Solution 1:
What you want is %.2f
, not 2%f
.
Also, you might want to replace your %d
with a %f
;)
#include <cstdio>
int main()
{
printf("When this number: %f is assigned to 2 dp, it will be: %.2f ", 94.9456, 94.9456);
return 0;
}
This will output:
When this number: 94.945600 is assigned to 2 dp, it will be: 94.95
See here for a full description of the printf formatting options: printf
Solution 2:
Use: "%.2f"
or variations on that.
See the POSIX spec for an authoritative specification of the printf()
format strings. Note that it separates POSIX extras from the core C99 specification. There are some C++ sites which show up in a Google search, but some at least have a dubious reputation, judging from comments seen elsewhere on SO.
Since you're coding in C++, you should probably be avoiding printf()
and its relatives.
Solution 3:
For %d
part refer to this How does this program work? and for decimal places use %.2f