Search:

Type: Posts; User: john.c

Page 1 of 20 1 2 3 4

Search: Search took 0.01 seconds; generated 46 minute(s) ago.

  1. Replies
    8
    Views
    216

    ` 2 3 5 ...

    ` 2 3 5 7 11 13 17 19 23 29 31 37 41
    1: 1 1
    2: 2 2 1
    3: 4 ...
  2. Replies
    8
    Views
    216

    ` Prime Factors Ord ...

    ` Prime Factors
    Ord Value Divs 2 3 5 7 11 13 17 19
    1: 1 1
    2: 2 2 1
    3: 4 3 2
    4: 6 4 1...
  3. Replies
    8
    Views
    231

    You don't know what you're talking about. It...

    You don't know what you're talking about.
    It makes perfect sense.
    Of course it should be "allowed".
  4. Replies
    4
    Views
    151

    65525, actually, but yes, wraparound is...

    65525, actually, but yes, wraparound is well-defined with unsigned values.


    #include <stdio.h>
    #include <stdint.h>

    int main()
    {
    uint16_t n = (uint16_t)(-1); // -1 interpreted as...
  5. As usual, I don't understand what you are trying...

    As usual, I don't understand what you are trying to do. The code doesn't make sense to me and you've never really been able to explain what in the world you are trying to do overall. I'm lost. It's...
  6. I didn't test it and forgot some closing...

    I didn't test it and forgot some closing double-quotes.
    But you put them in the wrong place.
    Note that you should probably use _pclose to close a FILE* opened with _popen.


    FILE* dns =...
  7. It may have been overly-complicated (showing two...

    It may have been overly-complicated (showing two different ways and using inttypes).
    How about this.


    #include <stdio.h>
    #include <string.h>

    int main()
    {
    FILE *in = fopen("input.txt",...
  8. #include #include #include...

    #include <stdio.h>
    #include <string.h>
    #include <inttypes.h>

    #define FRM_SCN "%" SCNu32 ".%" SCNu32 ".%" SCNu32 ".%" SCNu32
    #define FRM_PRI "%" PRIu32 ".%" PRIu32 ".%" PRIu32 ".%" PRIu32
    ...
  9. I didn't realize that the input was restricted to...

    I didn't realize that the input was restricted to 0 to 10.
    In that case it will sort of work, but it's an incredibly stupid idea.
  10. You really need to improve your spacing. You...

    You really need to improve your spacing.

    You seem to be trying to return the fib through the program's exit status.
    That's not going to work.


    #include <stdio.h>
    #include <stdlib.h>...
  11. Replies
    5
    Views
    146

    I wouldn't put it quite like that. But if a...

    I wouldn't put it quite like that.
    But if a calculation can be done at compile time then that's when it will usually be done (at least with optimizations).
    So if you say printf("%d\n", 2 * 3 * 4)...
  12. The return value from main is different from...

    The return value from main is different from return values from other functions.
    Main's return value is called the program's "exit status".
    It is non-portable to use this value for anything but...
  13. Replies
    5
    Views
    146

    There should be no difference in this case since...

    There should be no difference in this case since 'sizeof(struct _menu_item)' is constant, so nothing needs to be "calculated" at run-time since it's done at compile time.
  14. So what should we enter for "size" and...

    So what should we enter for "size" and "seconds"???

    And look at lines 168 and 169 above.
    Array indices start at 0, and the max index for a 3-element array is 2.
  15. Replies
    9
    Views
    469

    That's because the first discrepancy in the two...

    That's because the first discrepancy in the two strings is between the last '1' of the first string and the terminating '\0' of the second string, the difference of their ascii codes being 49 since...
  16. Replies
    9
    Views
    469

    Jim has made a rare error here, simply comparing...

    Jim has made a rare error here, simply comparing the addresses of the string literals and not their "values":


    std::cout << "Are the strings equal: " << std::boolalpha << ("1 222 111" == "1...
  17. Replies
    2
    Views
    120

    It's a meaningless question since you haven't...

    It's a meaningless question since you haven't told us what your command line parameters were.
  18. Replies
    10
    Views
    248

    Note that there is an error in the last part of...

    Note that there is an error in the last part of the code you've quoted. I fixed it in the original (it should've used strlen instead of sizeof since Delim is just a pointer).
    BTW, you don't need to...
  19. Replies
    10
    Views
    248

    So maybe something like this then: int...

    So maybe something like this then:


    int get_response_time(const char *ip)
    {
    char cmd[64];
    printf("Pinging %s...\n", ip);
    sprintf(cmd, "./ping %s", ip);
    int ms = -1;
    FILE...
  20. Replies
    10
    Views
    248

    If the numbers you want to compare are in strings...

    If the numbers you want to compare are in strings like these:


    char s[] = "Media = 234ms";
    char t[] = "Media = 99ms";

    Then comparing with strcmp will show t as being greater than s...
  21. Replies
    10
    Views
    248

    You might be able to do something like this. The...

    You might be able to do something like this. The %*[^0-9] scanf format spec will skip and discard non-digits. %d will then read the integer starting at that point.


    #include <stdio.h>

    int...
  22. Replies
    10
    Views
    248

    To compare strings you need to use strcmp. ...

    To compare strings you need to use strcmp.


    int result = strcmp(target, target2));
    if (result < 0) printf("DNS1 better\n");
    else if (result > 0) printf("DNS2 better\n");
    else ...
  23. Yes, that is commonly done. The trick is that...

    Yes, that is commonly done. The trick is that consecutive string literals, separated by only whitespace (incl. newlines) are "pasted" together into one string literal.


    #define BASE_PATH ...
  24. Replies
    29
    Views
    1,193

    void scan_ipconfig() { const char *terms[] =...

    void scan_ipconfig() {
    const char *terms[] = {
    "IPv4",
    "subred",
    "Puerta",
    "Servidores DNS",
    NULL
    };
    FILE *f = popen("ipconfig...
  25. Replies
    29
    Views
    1,193

    Maybe try something like this. void...

    Maybe try something like this.


    void ping(const char *ip) {
    char ping_cmd[256];
    sprintf(ping_cmd, "ping %s", ip);
    FILE *f = popen(ping_cmd, "r"); // popen is a posix function
    ...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4