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Top Forums Programming Merge two strings by overlapped region Post 302895782 by yifangt on Wednesday 2nd of April 2014 11:38:03 AM
Old 04-02-2014
Thanks Corona688!

Got the idea to use const char * for my case. However, after I changed the two lines,
Code:
char *str1 = argv[1]; 
const char *str2 = argv[2];

my code was compiled without error/warnings, but did not give any result.
Code:
Input strings are: 
Seq1=
Seq2=
Concatenated string is: Seq_merged=

I understand the direct assignment of *str1 = argv[1], *str2 = argv[2] to pass two pointers. There must be subtle things here I have missed.
 

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strneqvcmp(3)							Programmer's Manual						     strneqvcmp(3)

NAME
strneqvcmp - compare two strings with an equivalence mapping SYNOPSIS
#include <your-opts.h> cc [...] -o outfile infile.c -lopts [...] int strneqvcmp(char const* str1, char const* str2, int ct); DESCRIPTION
Using a character mapping, two strings are compared for "equivalence". Each input character is mapped to a comparison character and the mapped-to characters are compared for the two NUL terminated input strings. The comparison is limited to ct bytes. This function name is mapped to option_strneqvcmp so as to not conflict with the POSIX name space. str1 first string str2 second string ct compare length RETURN VALUE
the difference between two differing characters ERRORS
none checked. Caller responsible for seg faults. SEE ALSO
The info documentation for the -lopts library. ao_string_tokenize(3), configFileLoad(3), optionFileLoad(3), optionFindNextValue(3), optionFindValue(3), optionFree(3), optionGetValue(3), optionLoadLine(3), optionNextValue(3), optionOnlyUsage(3), optionProcess(3), optionRestore(3), optionSaveFile(3), optionSaveState(3), optionUnloadNested(3), optionVersion(3), pathfind(3), strequate(3), streqvcmp(3), streqvmap(3), strtransform(3), 2010-07-05 strneqvcmp(3)
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