I am going through the exercises and I am currently on Exercise 3: Formatted Printing.
I am stuck in the subsection ‘How to Break It’ of exercise 3. This section describes how to break the the program intentionally by modifying the script and omitting a few variables and functions such as ‘age’ and ‘printf’. I have done this to the code. However, I am unable to get this broken code compiled after modifying the ex3.c script.
Here is an example of what happens when the variable ‘age’ is removed from line 8 and then trying to compile after:
@:~/c$ make ex3
cc -Wall -g ex3.c -o ex3
ex3.c: In function ‘main’:
ex3.c:8:34: error: expected expression before ‘)’ token
printf (“i am %d years old.\n”,);
^
ex3.c:5:7: warning: unused variable ‘age’ [-Wunused-variable]
int age = 10;
^
: recipe for target ‘ex3’ failed
make: *** [ex3] Error 1
Make does not compile the broken script.
I am able to compile and build the code successfully when the ‘age’ variable is reinserted back to the correct line. However, I am unable to intentionally break the code and then compile this broken script according to the book, in order to get the desired crash build.
I am using Ubuntu 16.04.3
Is there anyway I can get the desired broken script to compile? Thanks in advance for any help you can provide.