how to remove "function should have a prototype" error?

[cksb97]

#include<iostream.h>
#include<conio.h>
int main()
{
setcolor(BLUE);
setbkcolor(yellow);
cout<<"the text in blue colour with yelow background";
getch();
return 0;
}

it keeps returning the same error always in my turbo c++ compiler if my program is wrong then please say the correct program for changing background colour and text colour plzzzzzzzz

[Nepomuk]

Hi cksb97 and welcome to bytes!

The problem seems to be with the conio.h header; it is not standardized so every compiler maker can create their own one. Not having used the Borland version myself, I can only guess based on what I have found online but try something like

textcolor(COLORS.BLUE);
textbackground(COLORS.YELLOW);

rather than your setcolor and setbkcolor functions.