Question

Adding a character to a C++ char array

Asked by: viralss

Hi
I have a char array
char m_string [20];
that contains a set of 9 digits 012345678

Is there any way I can add a hyphen into the string to get  012345-678 ?
The hyphen will always be in the same place and the string will always contain 9 digits.

Thanks


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Asked On
2009-09-10 at 04:25:40ID24720934
Tags

C++

,

array

Topic

C Programming Language

Participating Experts
3
Points
250
Comments
4

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Answers

 

by: Infinity08Posted on 2009-09-10 at 04:32:48ID: 25299139

Something like this maybe :

char m_string[20] = "012345678";
 
size_t i = strlen(m_string);
size_t j = 0;
m_string[i + 1] = '\0';
for (j = 0; j < 3; --i, ++j) {
  m_string[i] = m_string[i - 1];
}
m_string[i] = '-';

                                              
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by: mnialonPosted on 2009-09-10 at 04:41:12ID: 25299186

hello

you can try this :

 

string s = m_string.substr(0,6) + "-" + m_string.substr(6, 3);
 
strcpy(m_string, s);
                                              
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by: pgnatyukPosted on 2009-09-10 at 05:22:08ID: 25299432

my 2 coins. everything's predefined here, so it can be as simple as the following:

include <iostream>
using namespace std;
 
char str[20] = "012345678";
 
int main()
{
	cout << str << endl;
	int i = 10; 
	do 
	{
		i--;
		str[i] = str[i-1];
	} while(i > 6);
	str[6] = '-';
	cout << str << endl;
	return 0;
}
                                              
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by: viralssPosted on 2009-09-10 at 06:13:36ID: 31627018

Excellent, thanks all for your help

20120131-EE-VQP-002

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