How do I clear the new line \n after reading a character?

Question

My main function is printing twice after I come from a function back to main().

I'm pretty sure when it comes back to main it runs the cycle if I input '\n' and I'm not being able to fix this.

int main(){
char faz;

printf("What do you want to do?\nWrite C to create\nWrite R to read\nWrite U to edit\nWrite D to delete\nWrite E to exit the program\n>");
while((faz = getchar()) != EOF || faz != '\n')
{
  if(faz=='C') escreve();
  if(faz=='R') ler();
  if(faz=='U') editar();
  if(faz=='D') apagar();
  if(faz=='E') exit(1);
  else{ main();}
}

Any help would be welcome, this is a simple library management program.

Answer 1

you are recursively calling your main and that is what causes the problem, and you are calling exit(1) that normally signals an error for a normal behavior. I suggest you do the following :

int main(){
 char faz;
 bool done=false;
 printf("What do you want to do?\nWrite C to create\nWrite R to read\nWrite U to edit\nWrite D to delete\nWrite E to exit the program\n>");
 while(((faz = getchar()) != EOF || faz != '\n') && (!done))
 {
    done=true;
    if(faz=='C') escreve();
    if(faz=='R') ler();
    if(faz=='U') editar();
    if(faz=='D') apagar();
    if(faz=='E');
    else{ 
        done=false;
        printf("Please enter a valid input\n");
    }

 }
 return 0;
}