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Full Discussion: Merge two strings by overlapped region
Top Forums Programming Merge two strings by overlapped region Post 302896118 by yifangt on Friday 4th of April 2014 12:23:47 PM
Old 04-04-2014
This is very succinct code, and worked like charm. Thank you very much!
Questions: 1) As no malloc() was used to allocate memory for out, str1 and str2 in your strmerg() function. Is it because they are all declared const char* ?
2) In main() char out[4096] was used to hold the merged string, in practice, string 1 and string 2 can be as large as mega-bases. I thought dynamic allocation of the memory for out using a pointer would be better. It seems there is no such thing in C to dynamically allocate space for the merged string based on the two inputs (???). Can I ask if if there is anything inappropriate with my modification on main() function?
Code:
int main(int argc, char *argv[])
{
        char *out;
        if (argc != 3) {
                printf("Error! \nUsage: ./%s string1 string2\n", argv[0]);
                exit(EXIT_FAILURE);
        }

        out = malloc(sizeof(char)*(strlen(argv[1]) + strlen(argv[2]))+1);

        printf("string 1 is %s\n", argv[1]);
        printf("string 2 is %s\n", argv[2]);

        strmerg(out, argv[1], argv[2]);
        printf("Output is %s\n", out);

        free(out);
        return(0);
}

Thanks a lot!
 

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LEARN ABOUT OSX

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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