C语言调试打印log函数。

#define COMMLIB_DBG_FILE "\\MyLog.log"
void mydbgprintf(const char *str, ...)
{
        va_list ap;

        FILE *fh = NULL;

#ifdef __STDC_WANT_SECURE_LIB__
        if(fopen_s(&fh, COMMLIB_DBG_FILE, "a") == 0)
#else
        if(fh = fopen(COMMLIB_DBG_FILE, "a"))
#endif
        {
                va_start(ap, str);
                vfprintf(fh, str, ap);
                fprintf(fh, "\n");
                va_end(ap);     
                fclose(fh);
                fh = NULL;
        }       
}

//调用方法
int i = 0;
mydbgprintf("i = %d", i);