Checking for different strings

[facade]

Hi all,
I am new to C++ and would like to get some help here.
I am trying to use C++ to read text files. From there, I wish to capture strings that coincide with certain declared strings.
For eg. Using getline(), I have a whole line of string from the text file. From there, I want to check if in that line, there exist "Gross Margin" in it. If it exist, I will want to capture the whole string and output it to another separate text file. Moreover, I need to check for the different type of case for Gross Margin. "Gross margin", and "gross margin" has to be checked together to get the result.

Hope I can get some help soon. Many thanks in advance.

[horace1]

Hi all,
I am new to C++ and would like to get some help here.
I am trying to use C++ to read text files. From there, I wish to capture strings that coincide with certain declared strings.
For eg. Using getline(), I have a whole line of string from the text file. From there, I want to check if in that line, there exist "Gross Margin" in it. If it exist, I will want to capture the whole string and output it to another separate text file. Moreover, I need to check for the different type of case for Gross Margin. "Gross margin", and "gross margin" has to be checked together to get the result.

Hope I can get some help soon. Many thanks in advance.

have a look at the string tutorial
http://www.cprogramming.com/tutorial/string.html

and the reference
http://www.cppreference.com/cppstring/index.html

[Ganon11]

You can use the string function .find() as follows:

Once you have the input in a string variable (message, for example), if you know the string you want to search for, use

message.find(YourString); // in this case, "Gross Margin"

The function will return the integer representing the position of YourString in message. For instance, if message was "Yearly Gross Margin Is Blah", then message.find("Gross Margin") would return 7 because "Gross margin" starts at position 7 of message.

If YourString is not present in message, the .find() function returns an integer constant string::npos. So, if I were to search the message above for "Money", the .find() function would return string::npos.

It follows that, if YourString is present in message, than .find() does NOT return string::npos. You can check if message contains the given string by checking if its .find() value is NOT string::npos.

Note: You may have to #include <string> to get string::npos.

[facade]

Hi all,
Thanks for all the help. Will go try them out.

Regards