Find characters in line?

Question

1.00/5 (3 votes)

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C++

C

Visual-Studio

I had a line like "kjhdjhdah@lddhfdj".Can you please give me pseudo code to find @ symbol in the line?

Posted 4-Nov-12 0:14am

Tarun Batra

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Sandeep Mewara 4-Nov-12 8:29am

It does not work like this here.

Here is what is expected of enquirers:
1. TRY first what you want to do! You may find that it's not that hard.
2. Formulate what was done by you that looks like an issue/not working.

Try them and tell if you face issues.
Members will be more than happy to help like this.

4 solutions

Solution 4

Comment in solution suggests you want it in C++?

C++

std::string s("kjhdjhdah@lddhfdj");
size_t location = s.find("@");
std::cout << location << std::endl;

Outputs "9"

Posted 5-Nov-12 23:12pm

Quirkafleeg

Comments

Tarun Batra 22-Feb-14 9:08am

please reply in this http://www.codeproject.com/Questions/731791/File-ponter-maintaince-error-please-guide

Solution 3

Start here[^] and here[^] and spend some time studying. If you want to find out how to manipulate characters within strings then find the entry for std::string in the library section and check all the available methods; there will probably be one called find()[^]. You should really get familiar with the MSDN documentation, as I have suggested to you in a number of your previous questions.

Posted 4-Nov-12 2:27am

Richard MacCutchan

Comments

Tarun Batra 22-Feb-14 9:08am

please reply this http://www.codeproject.com/Questions/731791/File-ponter-maintaince-error-please-guide

Richard MacCutchan 24-Feb-14 3:57am

What does this mean?

Solution 2

use

C++

char * strchr ( const char *, int );

consider the example below.

C++

/* strchr example */
#include <stdio.h>
#include <string.h>

int main ()
{
    char str[] = "This is a sample string";
    char * pch;
    printf ( "Looking for the 's'character in \"%s\"...\n", str );
    pch = strchr(str,'s' );
    while ( pch != NULL )
    {
        printf ( "found at %d\n", pch - str + 1 );
        pch = strchr( pch + 1, 's' );
    }
   return 0;
}</string.h></stdio.h>

Posted 4-Nov-12 1:25am

Sajeesh Payolam

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Santhosh G_ · Accepted Answer · 2012-11-04T00:33:00

Solution 1

Use strchr() function.

C#

char *strchr(
   const char *string,
   int c 
);
);

Returns a pointer to the first occurrence of c in string, or NULL if c is not found.
For Unicode version, wcschr can be used.

Posted 4-Nov-12 0:33am

Santhosh G_

Updated 4-Nov-12 0:36am

v2

Comments

Tarun Batra 4-Nov-12 7:10am

Sir i want to read a line from a file then i take it into a string using getline,getline doesnt work with char *

Santhosh G_ 4-Nov-12 7:29am

Use c_str() function of string.
strchar( strObj.c_str(), '&' );

Quirkafleeg 6-Nov-12 5:06am

If you're going to use the C++ string, why use a C function?

Santhosh G_ 6-Nov-12 7:37am

"C" is also tagged in the question. Anyway string::find() also an option to find the character in the string.

Tarun Batra 22-Feb-14 9:08am

please reply this http://www.codeproject.com/Questions/731791/File-ponter-maintaince-error-please-guide