write « Debug « C Q&A

1. Writing and debugging ansi c code in Visual Studio 2005    stackoverflow.com

I'm writing an ansi c program in vs2005. Everything compiles ok and I can run the program from command line. BUT, if I run it inside the IDE then the app ...

2. I need to write a dispense change program.I completed the code,but it has some problem.Please help me to debug the code    stackoverflow.com

There is a question in "Problem Solving and Program Design in C" book.I wrote the code, but loop isn't terminating.

#include <stdio.h>
#include <math.h>
void change(double coin_change, int *quarters, int *dimes, int *nickels, int ...

3. Valgrind error: invalid write of size 4 (but says error is in free() )    stackoverflow.com

First, here is the message valgrind gives me (this is just one error, I get the same message several times)

==25248== Invalid write of size 4
==25248==    at 0x4024B3A: free ...

4. Best way to write a DEBUG() output printing macro? My way isn't, apparently...    cboard.cprogramming.com

5. Good practice of writing debug print statements    cboard.cprogramming.com

Code: #include #include #include #ifdef DEBUG #define DEBUGLOG(level, fmt) do { char *TEMP; TEMP = build_log fmt; do_log(__LINE__, __FILE__, level, TEMP); free(TEMP); } while (0) #else /* define DEBUGLOG out if no DEBUG defined. */ #define DEBUGLOG(level, fmt) #endif char *build_log(const char *, ...); void do_log(int, char *, int, char *); int main(void) { int x = 100; ...