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Replace String

Replace String

Replace String

I am trying to write a small script that will replace what is in a file with new data.

i have the file opened and i can display it on the screen


int main()
 string line2;
 ifstream file2;
  printf("File rc.conf not open");



what I need to do is search the file for the instance of "EXT2IP" which actually reads as (#EXT2IP="").

I need to find that instance, strip off the # (if exists) and then replace the IP address with an IP address I will pull from an array.

Your help is greatly appreciated.

RE: Replace String

1.  You use both cout and printf().  I'd stick with cout for the whole program.  I believe there could be problems if you start mixing the two together.

2.  To search for "EXT2IP", you can use the string::find() function: http://www.cppreference.com/cppstring/find.html

3.  To write to the file you'll need to use a ofstream file to write to (or a fstream if you want to read & write to the same file).

RE: Replace String

Thanks for the suggestion. I ended up using sed to do what I needed.

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