There is no format specifier for bool types. However, since any integral type shorter than int is promoted to int when passed down to printf()‘s variadic arguments, you can use %d: But why not: or, better: or, even better: instead?
You need to link with the math library: The error you are seeing: error: ld returned 1 exit status is from the linker ld (part of gcc that combines the object files) because it is unable to find where the function pow is defined. Including math.h brings in the declaration of the various functions and not their definition. The def is present in … Read more
When you link the program you need to give both Main.o and Person.o as inputs. Build usually is done in two steps (1) compilation and (2) linking. To compile your sources do: Or in one line: Then the resulting object files must be linked into a single executable: For small projects, of a few compilation … Read more
You need to link with the math library: The error you are seeing: error: ld returned 1 exit status is from the linker ld (part of gcc that combines the object files) because it is unable to find where the function pow is defined. Including math.h brings in the declaration of the various functions and not their definition. The def is present in … Read more
How are you doing the compiling and linking? You’ll need to specify both files, something like: …so that it knows to link the functions from both together. With the code as it’s written right now, however, you’ll then run into the opposite problem: multiple definitions of main. You’ll need/want to eliminate one (undoubtedly the one in … Read more
You cannot do a conditional branch without first setting the condition register somehow. This can be done with cmp or by adding s to most instructions. Check out the ARM assembly documentation for details. Quick example: Branch if r0 greater than 5: Compare r6 with r4 , put difference into r7, branch if r7 < 0:
Simply put, a ” No route to host”” would mean that there is no route for the server IP address in the client’s routing table. Are you able to ping the server’s IP address? Most likely you should not be able to and ping should say that the server is not reachable. If so, then … Read more
You are trying to call do_something before you declare it. You need to add a function prototype before your printf line: Or you need to move the function definition above the printf line. You can’t use a function before it is declared.
Maybe SO_REUSEADDR helps here? http://www.unixguide.net/network/socketfaq/4.5.shtml
Yes, of course you can, but before that you need to learn what header files are and how you can use them properly. file: yourname.h yourname.cpp main.cpp To learn more about header files and include statements, click the link below. Header tutorial