Scanf causes C program to crash

Question

This simple issue is causing my entire program to crash during the first input. If I remove the input, the program works fine but once I add scanf into the code and enter th

Answer 1

You must pass the address of the variable to scanf:

 scanf("%c", &answer);

Answer 2

Use "&answer". And get rid of the extraneous "fflush()" commands...

Better, substitute "answer = getchar ()".