help to change a letter (C++)

[sitha]

Hi,
I am new to C++ program. Pls help me for following problem.
I have a text file as follows,

1 0.845230d+02 0.824650d+02 0.000000d+00
2 0.845230d+02 0.824650d+02 0.000000d+00
3 0.845230d+02 0.824650d+02 0.000000d+00
4 0.845230d+02 0.824650d+02 0.000000d+00
5 0.845230d+02 0.824650d+02 0.000000d+00
6 0.845230d+02 0.824650d+02 0.000000d+00
7 0.845230d+02 0.824650d+02 0.000000d+00

Here I want to change the letter "d" to "e". Pls help me to write a program.

Thanks lot in advance.

Regards,
Sitha.

[Banfa]

This looks like a course work problem, as such I suggest that you attempt to write the program yourself, then post your code here and we will help you debug it. As some hints I would say that you will need to use

File handling functions

fopen
fgets
fclose

Array manipulation (of a char array).


Have an attempt post what you come up with, you will learn more that way.

[benidrissa]

Hello Sitha,
If your strings have a constant length you can manipulate it as array to locate the 2nd "d" position and simply change it to "e"