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Full Discussion: Find and print number after string in C
Top Forums Programming Find and print number after string in C Post 302525548 by kumaran_5555 on Friday 27th of May 2011 04:35:10 AM
Old 05-27-2011
This code has worked for one line string, you can use match() in your code

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

int match(char *ts,char *pattern);

int main()
{

        char *str="123 test=123 val=233.33 x=111 y=222 senth";
        char *ptt="senth";


        match(str,ptt);

}

int match(char *ts,char *pattern)
{

        char *pt=pattern;

        while(1)
        {
                printf ("comparing %c %c\n",*ts,*pt);
                while( *pt && *ts++ == *pt++)
                {
                        printf ("comparing %c %c\n",*ts,*pt);
                        ;
                }
                if(*pt == '\0')
                {
                        printf("match found %s\n",ts-strlen(pattern)-1);
                        break;
                }
                else if(*ts== '\0')
                {
                        printf("match not found \n");
                        // pattern not found
                        break;
                }
                        pt=(char *)pattern;
        }

}

 

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LEARN ABOUT DEBIAN

regexp

Regexp(3I)						    InterViews Reference Manual 						Regexp(3I)

NAME

       Regexp - regular expression searching

SYNOPSIS

       #include <InterViews/regexp.h>

DESCRIPTION

       A  Regexp  encapsulates	a  regular expression pattern and defines operations for searching and matching the pattern against a string.  The
       syntax of the regular expression pattern is the same as that for ed(1).	Information can be obtained about the most  recent  match  of  the
       regular expression (and its sub-expressions).

PUBLIC OPERATIONS

       Regexp(const char* pattern)
       Regexp(const char* pattern, int length)
	      Construct a new Regexp for pattern.

       int Match(const char* text, int length, int index)
	      Attempt a match against text (of length length) at position index.  The return value is the length of the matching string, or a neg-
	      ative number if the match failed.

       int Search(const char* text, int length, int index, int range)
	      Search for a match in the string text (of length length).  Matches are attempted starting at positions between index and index  plus
	      range.   If  range  is  positive	the  first  match  after  index is reported.  If range is negative the first match before index is
	      reported.  The return value is the index of the starting position of the match, or a negative number if there is	no  match  in  the
	      specified range.

       int BeginningOfMatch(int subexp)
       int EndOfMatch(int subexp)
	      Return  information  about the most recent match.  If subexp is zero (the default), information is reported for the complete regular
	      expression.  Other values of subexp refer to sub-expressions in the pattern.  For example, if subexp is 2, information  is  returned
	      for the sub-expression specified by the second pair of ( and ) delimiters in the pattern.

SEE ALSO

       ed(1)

InterViews							    23 May 1989 							Regexp(3I)
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