Problems with character input using scanf()

Question

I\'m trying to input a character into a linked list, where the character can be \'A\',\'a\',\'G\',\'g\',\'T\',\'t\',\'C\' or \'c\'.

I\'m not yet familiar with C and

Answer 1

You're leaving the '\n' on stdin:

scanf("%d",&navigate);  
getchar(); // consume the newline character
...
scanf("%c",&newChar);
getchar(); // consume the newline character

Or since you're already using scanf() you can tell scanf itself to take care of the newline character:

scanf("%d\n", &navigate);
....
scanf("%c\n",&newChar);

Even better you can leave it open by adding a space after the format specificer:

scanf("%d ", &navigate);
....
scanf("%c ",&newChar);

Just in case the user wants to do something like: 2

Regardless of how you handle it, the point is you need to consume the newline character.