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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 DEBIAN

sim2gff

SIM2GFF(1)						      General Commands Manual							SIM2GFF(1)

NAME

       sim2gff - Converts SIM file into GFF formatted records

SYNOPSIS

       sim2gff [-frxyHh] sim_file > gff_file

DESCRIPTION

       This manual page documents briefly the sim2gff command.

       sim2gff is a program written in Perl that converts SIM file into GFF formatted records (for use with gff2aplot and gff2javaplot).

OPTIONS

       -h, --help
	      Show summary of options.

       -f     Output is written to a file named <sim_file>.gff.

       -r     Interchange the order of sequences (Seq1 on y-axis, Seq2 on x-axis).

       -x <name>
	      Specify the species name for species1 (default: "Seq1").

       -y <name>
	      Specify the species name for species2 (default: "Seq2").

       -H     Use the fasta file headers for species labels.

EXIT STATUS

       The following perl-like exit status are returned:

       0 Error

       1 Successful completion

SEE ALSO

       ali2gff(1), blat2gff(1), gff2aplot(1), parseblast(1).

AUTHOR

       sim2gff was written by Thomas Wiehe <twiehe@imb-jena.de>.

       This manual page was written by Nelson A. de Oliveira <naoliv@gmail.com>, for the Debian project (but may be used by others).

							  Mon, 21 Mar 2005 21:44:15 -0300						SIM2GFF(1)
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