Is it compulsory to write .h with iostream inc++

apologies as it seems that in modern implementations iostream is used without the .h. but some header files are still used with the .h.

yes, without. h it won't work. .h is to denote it as the header file

but in this app in no program .h is used

thanks.

pl ans my other question also.

this is caused by standardization of c++. As both types should work, but due to changes recent compiler versions might not support the .h types

here in this app I think a newer compiler version is used which uses the iostream as the choice instead of iostream.h

no its upto the compiler u use,in turbo c++ it doesn't wotk without .h