converting integer to string and appending

hi all,

i want to convert a number (in a for loop) and append that to "_s.jpg"

i.e. as the for loop keeps going my string should be:
"1_s.jpg"
"2_s.jpg"
"3_s.jpg"

etc.

so any functions i could use to achieve this?

thanks in advance for any help

sachin

To convert an int to a string. As for appending a string to another string, that's just string concatenation.

Hi

you can follow up on the link below
Q: How to convert a string into a numeric type?

Edit:
My apology!
I thought it was the other way around.

See http://www.cplusplus.com/reference/i...ostringstream/

All links are pointing to only 1 solution. Please suggest another link for OP to learn more

Quote:

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Originally Posted by Ledidas

All links are pointing to only 1 solution.

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It's the solution that any experienced C++ coder would use.
Unless the OP wants a 'C' solution.

Quote:

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Originally Posted by Ledidas

All links are pointing to only 1 solution. Please suggest another link for OP to learn more

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Boost.Format would be an alternative, but it may end up using a stringstream under the hood, and is probably overkill when you just want to prepend a number.

Anyway, why don't you "suggest another link for OP to learn more"?

I think sprintf is perfectly acceptable in this case. It's a filename so a char buffer of MAX_PATH (assuming microsoft) is applicable and probably the simplest approach:

Code:

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  char filename[MAX_PATH];

  for(int i=0;i<10;i++){
    sprintf(filename,"%d_s.jpg",i);
    //do whatever with filename...
  }

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Quote:

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Originally Posted by hoxsiew

It's a filename so a char buffer of MAX_PATH (assuming microsoft) is applicable

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Given that one will be prepending a number, it can be even shorter.

Quote:

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Originally Posted by laserlight

Boost.Format would be an alternative, but it may end up using a stringstream under the hood, and is probably overkill when you just want to prepend a number.

Anyway, why don't you "suggest another link for OP to learn more"?

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Boost lexical_cast could be a good solution.

But I would never recommend to somebody using boost, if they don't understand how it is done without.