error is coming while linking the file

error is undefined symbol _clearviewport in module ...

i have used graphics.h library function dos.h and also stdlib.h

can any one help me out to identify this problem?

can any one help me out to identify this problem?

Do you have a time machine that can take you back to 1990? If not, you'll have to wait until someone happens by who remembers how to use your ancient compiler.