Open a WebPage

This is a discussion on Open a WebPage within the C Programming forums, part of the General Programming Boards category; Is there a way to open a web page in C? I'm a newbie in this, im just starting... My ...

  1. #1
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    Open a WebPage

    Is there a way to open a web page in C?

    I'm a newbie in this, im just starting... My goal is to open a link to a web page after the user enters the correct password. I can post my code so far if you ask for it, where it asks for the password and when it gets the correct one it opens up a program (iexplore.exe).

    please help

  2. #2
    CSharpener vart's Avatar
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    yuo can use system() call to run the external program in C
    The first 90% of a project takes 90% of the time,
    the last 10% takes the other 90% of the time.

  3. #3
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    ok so i didn't know how to attach or write my code here.. but I read the rules!!

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main()
    {
        char* pass;
        char* p="hello";
        int i=0;
    
        printf("Enter password and press ENTER.\n \n");
        do
        {
            printf("Password: ");
            scanf( "%s",  pass);
    
            if(strcmp ( pass, p ) == 0)
            {
                printf("Correct Password. \n \n");
                i=10;
            }
            else
            {
                if(strcmp ( pass, "hint" ) == 0)
                {
                    printf("Password Hint: Form of salutation. \n \n");
                }
                else
                {
                    printf("Incorrect Password. \nType 'hint' for help. \n \n");
                    i++;
                }
            }
    
            if (i == 3)
            {
                i++;
                printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
                getch();
            }
        }
        while (i<4);
    
        if (i == 10)
        {
            printf("Press ENTER to continue... \n");
            getch();
            //Open a program or file
            system ("C:\\PROGRA~1\\INTERN~1\\iexplore\.exe");
            printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
            getch();
        }
    
        return 0;
    }

  4. #4
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    Quote Originally Posted by vart View Post
    yuo can use system() call to run the external program in C
    so as you can see now, i did use the system() to call for iexplore.exe, but how do i open a specific page? i dont want it to open the homepage. i've been reading also some kind of changing the registry keys of windows so the c program would change the homepage, but that's kind of intrusive!

  5. #5
    C++ Witch laserlight's Avatar
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    In all likelihood, if you supply a URL as a command line argument to iexplore, it will open that URL. This means that you need to concatenate the desired URL to the string that you pass to system().
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    Quote Originally Posted by laserlight View Post
    In all likelihood, if you supply a URL as a command line argument to iexplore, it will open that URL. This means that you need to concatenate the desired URL to the string that you pass to system().
    i don't get it... :S
    like this?

    this is only the end....
    Code:
            //Open a program or file
            open (webpage);
            printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
            getch();
        }
    
        return 0;
    }
    
    void open(char *webpage)
    {
        system ("C:\\PROGRA~1\\INTERN~1\\iexplore.exe");

  7. #7
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    As laserlight pointed out concatenate the URL string to the iexplorer executable.

  8. #8
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    Quote Originally Posted by itCbitC View Post
    As laserlight pointed out concatenate the URL string to the iexplorer executable.
    im sorry but i've been trying and i dont get the concatenate...
    i searched and i think i got the the concatenate right.. but is not working like that, it just ends. this is what i got:

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    
    char* internet="C:\\PROGRA~1\\INTERN~1\\iexplore.exe";
    char* url="www.google.com";
    
    
    
    int main()
    {
        char* pass;
        char* p="hello";
        int i=0;
    
        printf("Enter password and press ENTER.\n \n");
        do
        {
            printf("Password: ");
            scanf( "%s",  pass);
    
            if(strcmp ( pass, p ) == 0)
            {
                printf("Correct Password. \n \n");
                i=10;
            }
            else
            {
                if(strcmp ( pass, "hint" ) == 0)
                {
                    printf("Password Hint: Form of salutation. \n \n");
                }
                else
                {
                    printf("Incorrect Password. \nType 'hint' for help. \n \n");
                    i++;
                }
            }
    
            if (i == 3)
            {
                i++;
                printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
                getch();
            }
        }
        while (i<4);
    
        if (i == 10)
        {
            strcat(internet, url);
            printf("Press ENTER to continue... \n");
            getch();
            //Open a program or file
            system (internet);
            printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
            getch();
        }
    
        return 0;
    }

  9. #9
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    supply in args when making the system call.

  10. #10
    C++まいる!Cをこわせ! Elysia's Avatar
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    Your code doesn't work. Because:
    1) http://apps.sourceforge.net/mediawik..._be_const_char
    2) http://apps.sourceforge.net/mediawik...tle=Scanf_woes
    3) I do not recommend you use Internet Explorer. When people see IE launching instead of their default browser, they get annoyed. I suppose you use Windows? Then you should look into ShellExecute. I believe a quick search on the forums should provide a good deal of information.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  11. #11
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    Space(s) separate the command from its argument and strcat() won't do that for you.

  12. #12
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    ok i got it with the shellexecute! thanks to everyone!!
    though i still got some memory error at the end :S.
    will anyone care to suggest something more?

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <windows.h>
    
    int main()
    {
        char* pass;
        char* p="hello";
        int i=0;
    
        printf("Enter password and press ENTER.\n \n");
        do
        {
            printf("Password: ");
            scanf( "%s",  pass);
    
            if(strcmp ( pass, p ) == 0)
            {
                printf("Correct Password. \n \n");
                i=10;
            }
            else
            {
                if(strcmp ( pass, "hint" ) == 0)
                {
                    printf("Password Hint: Form of salutation. \n \n");
                }
                else
                {
                    printf("Incorrect Password. \nType 'hint' for help. \n \n");
                    i++;
                }
            }
    
        }
        while (i<3);
    
        if (i == 10)
        {
            printf("Opening program... \n\n");
                    //Open a program or file
            ShellExecute(NULL, "open", "http://www.microsoft.com", NULL, NULL, SW_SHOWNORMAL);
            printf("Close program to contione. \nPress any key. \n\n");
            getch();
        }
    
        printf("\n---- PROGRAM TERMINATED ----\n--- PRESS ANY KEY TO END ---\n");
        getch();
    
        return 0;
    }

  13. #13
    CSharpener vart's Avatar
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    scanf( "%s", pass);

    your pass is not initialized pointer - you need a real buffer to store the user input

    Code:
    char pass[100];
    if(scanf("%99s", pass) == 1)
    {
       /* input succeded - process the pass buffer */
    }
    The first 90% of a project takes 90% of the time,
    the last 10% takes the other 90% of the time.

  14. #14
    C++まいる!Cをこわせ! Elysia's Avatar
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    Also, string literals should be const char*:
    const char* p="hello";
    Glad to see you took my advice about ShellExecute, though.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  15. #15
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    Cool uhh duhh?

    this works..

    system ("START www.website_name_here.com");

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