How do I read a specific line from a text file in VB NET?
6 Answers
- Load the complete text file into memory, e.g. by using File. ReadAllLines(“Foobar. txt”) .
- Create a line number index manually. That is, process a text file line by line, and fill a Dictionary(Of Integer, Integer) as you go. The keys are line numbers, and the values are file offsets.
What is namelist in Fortran?
The NAMELIST statement defines a group of variables or arrays. It specifies a group name, and lists the variables and arrays of that group.
How do you use GOTO function?
one: for (i = 0; i < number; ++i) { test += i; goto two; } two: if (test > 5) { goto three; } .. Also, the goto statement allows you to do bad stuff such as jump out of the scope. That being said, goto can be useful sometimes. For example: to break from nested loops.
How do you input and output data in Fortran?
This form of input-output is free format I/O, and it is called list-directed input-output. read(*,*) item1, item2, item3… print *, item1, item2, item3 write(*,*) item1, item2, item3……For example.
| Sr.No | Symbol & Description |
|---|---|
| 1 | c Column number |
| 2 | d Number of digits to right of the decimal place for real input or output |
How do I read a specific StreamReader?
“read a specific line from a text file c#” Code Answer
- string GetLine(string fileName, int line)
- {
- using (var sr = new StreamReader(fileName)) {
- for (int i = 1; i < line; i++)
- sr. ReadLine();
- return sr. ReadLine();
- }
- }
How do you read a specific line number in Python?
Use readlines() to Read the range of line from the File You can use an index number as a line number to extract a set of lines from it. This is the most straightforward way to read a specific line from a file in Python. We read the entire file using this way and then pick specific lines from it as per our requirement.
What is a namelist file?
What is goto statement in Fortran?
The computed GO TO statement selects one statement label from a list, depending on the value of an integer or real expression, and transfers control to the selected one.
How do I print on the same line in Fortran?
“write (file_number,format_spec,advance=’no’) variable_name” – But if you use the defualt format * then it automatically writes multiple variables (in a single write staement) on the same line if possible. As in “write (*,*) a,b,c”, variables a,b and c are all written on the same line.
How do I input in Fortran?
What does rewind do in Fortran?
REWIND repositions a file to the beginning of information so that the next READ statement will read the first record; if a WRITE statement is used after REWIND all existing records on the file are destroyed.
How do I read the number of lines in a file?
In your subroutine to read the number of lines in the file, you try to read a REAL from a file where the first word is often not a number. This might lead to IOSTAT being non-zero, even if you haven’t reached the end of the file. Always read a character variable.
How do I read (9) and (a) from a file?
Actually, you’ll probably want to read (9, ‘ (A)’) because you want to read the whole line, not just until the first element separator (i.e. space or comma). In your subroutine, you open the file again, under the same unit.
How do I read the first element of a line?
The line read (*, *) command (i) reads the first element of standard input, not from the file. I think you want to read (9, *). Actually, you’ll probably want to read (9, ‘ (A)’) because you want to read the whole line, not just until the first element separator (i.e. space or comma).