Getting an Input from the FILE

[vinubharathi29]

i have a text file which have the following content
n:=9
name:=vinu

here i need to take the value of n 9 and also value of name vinu
then i need to process and i need to again write in a file as the output

can u just help me out to take the value from a text file
can u just give me a sample code

[stealwings]

i have a text file which have the following content
n:=9
name:=vinu

here i need to take the value of n 9 and also value of name vinu
then i need to process and i need to again write in a file as the output

can u just help me out to take the value from a text file
can u just give me a sample code

you can use getline comand to get the content of the text file. You should include the fstream header and std:: ifstream for reading text file and std:: oftream for writing text file. You can try to get the content of the file character by character then compare them, using string compare and if it matches write it to your file, or just print them out. I'm also a beginner but I think that should work.

[AdrianH]

i have a text file which have the following content
n:=9
name:=vinu

here i need to take the value of n 9 and also value of name vinu
then i need to process and i need to again write in a file as the output

Ok.

can u just help me out to take the value from a text file
can u just give me a sample code

No, we cannot. We are not here to do your work for you, but we can give you pointers.

You will need to open an fstream to read the file. In fact, since you are only wanting to read you should use ifstream.

From there you will have to start to read and interpret the input (this is called parsing). Given the nature of the assignment I think part of what stealwings suggested is a good call in that you read in the line. Once read in, you can assign it to a string class object and use find on it or use strstr or strspn on the buffer directly to separate the words from the assignment operator ‘:=’ in your file.

Give it a try and let us know how you are doing. If you have additional questions, feel free to ask. If you are having problems, post the relevant code (within [code] [/code] tags please) and point out where you are having the trouble and what that trouble is.

Good luck,


Adrian