I’m building a new program, but when I run it, an error pops up. The error displayed is as follows:

main.c:(.text+0x33): undefined reference to `clrscr' 
 collect2: error: ld returned 1 exit status

I have tried several workarounds, but they still do not get the desired results. If you have come across this situation and have a solution for the collect2.exe: error: ld returned 1 exit status problem, pls let me know. This is what I do:

void main() {
  char chr;
 
  printf("ENTER a character");
  scanf("%c",&chr);
 
  clrscr();
 
  switch(chr) {
  default:
  printf("\nHello..\n");
  break;
  case 1:
  printf("\nHi one");
  break;
  case 2:
  printf("\nHi two\n");
  break;  
  }
 }

Thanks.