C :: Parsing A Line To Extract A Particular Substring?
Mar 14, 2014
Suppose I have read a line from an ASCII file with fgets(). Now I want to parse the line, which looks something like this: Code: # John Q. Public et al. 2014, to be submitted The name, "John Q. Public" is what I want. However, the name can be anything, consisting of 1 or more tokens separated by spaces. it could be "John" Or "John Public", or "Thurston Howell the 3rd", or etc... Bascially, I need to get the entire substring between the first hash mark, and the "et al" in the line. I tried this: Code: sscanf(line,"# %s et al.",name); But I can only get the first token (which, in this case, is "John").
I have to make a c++ program, in which with an algorithm I have to code a text from a file and write it to another file. The input should like this: "code forCoding.txt toBeWritten.txt" ; or like this: "decode toBeReadFor.txt toBeWrittenIn". I have done everything except one thig: It is says I have to be able to input parameter.
How should i write this? I read [URL] ....., but still dont get. The input of my program has to have 3 strings, so I guess argc should be 3, but I dont really get it. What should I have in my main about this parsing command line parameters?
I'm getting this when I compile my program. Then, when the program runs I get an error. I assume it is because I have the warning for this problem. How can get around this error.
warning C4172: returning address of local variable or temporary
Code:
#include <iostream> #include <cstring> using namespace std;
my professor just increased the problem by saying the time value should be passed as command line arguments can anybdy tell the code to parse time as command line arguments
I am trying to create program which will process command line arguments and define which functions should be run, with specific order and specific arguments. This is my first problem:
Code: // proccessing_args.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <vector> #include <string> #include <iostream> #include <conio.h> using namespace std; int _tmain(int argc, _TCHAR* argv[])
[Code] ....
proccessing_argsproccessing_args.cpp(20): error C2143: syntax error : missing ',' before ':'
refers to the line with for. I copied the code form here [URL] .....
I am stuck in some logic and want to write a program to do following tasks : I have three string variables to be compared to each other,a string having sub string & hierarchy string!!
1.) name1=john name2=tom_john_tom name3=alextom_john thus we need to search john from name2 and name3 and if name1 exists in both name2 and name3 then ok else check for step2
2.) name1=a.b.c.d ,name2=a.b.c.d and name3=a.b.c.d we need to compare each string seperated by a dot in all three variables and we need to match each string seperated by a delimeter "." if name1.a==name2.a==name3.a and name1.b==name2.b==name3.b ,name1.c==name2.c==name3.c and name1.d==name2.d==name3.d then its a match else its a mismatch
Also,the catch is we can have name1 ,name2 and name3 in format name1=*.*.*.* and name2=*.*.*.* and name3=*.*.*.* where * defines it can be any value to be matched
Here are the requirements for a project I am working on.
Write a function that will write only unique ip addresses to a file (just the ip address, not the entire line).
Write a function that will search for an ip address and display all page requests for that ip address.
The ip is pulled from a "weblog.txt" file which has been put into a vector and sorted. I am having trouble with the loop to pull only unique ip addresses from the vector.
i couldnt solve the algorithm exactly. The program asks the user for a string. "Bugun h@v@ cok g'uzel" for example. then the program asks for another string. If that string doesnt exists in the main string program should say there isnt any substring. If it exist then the program should print the remaining part of main string. For example:
Write the first string: Tod@y weather is be'@utiful write the substring : ug >>ugun h@v@ cok guzel write the substring :wldnqwbdbj >>there isnt any substring Here where i came so far
#include <stdio.h> int main() { char mainstr[50],substr[50];
I would like to compare two strings, one of which is an independently stored string - the other being a string within a vector. However, i do not know how to do this, as
I have text file with around 10k lines. Each line contains number with length 12-14 digits. I want to take only first 8 digits from each number and writ it in new file.
I need to use the output of my IF statement in a calculation. But how can i extract the output from the IF statement in my code?
#include <iostream> #include <cmath> using namespace std; int main(int argc, char *argv[]) { double x, y, z; cout<<"Please enter the student's three test grades:"<<endl; cin>>x>>y>>z;
I have a std::vector<int> and I want to modify subset of the elements. I thought I might be able to use:
std::vector<int> a = { 1,2,3,4,5,6,7,8,9 }; std::vector<int> b(&a[3],&a[7]); for(auto& each : b) { each++; } for(auto& each : a) { std::cout << each << " "; }
but that didn't work. The elements of 'a' retain their original values. Then, I thought, "Ooo, maybe I could make 'b' a reference." Nope. What approach would be to access a subset of a vector for potential alteration?
I need to extract comments from a C file, which are usually marked with " /* This is a comment */ ". It seems to me that I need to calculate first at what position is the / and then ask it if on the very next position to the / operand is the *, if it is then I need check where is the next * and if / operand is immediately next to it. At last I need to take everything between values that the first and second * have. But I don't know how to write that in code.
Its to extract some images from .adf files, I have had it working about 2 years ago but now i cant figure out the right directory.
Code:
using System; using System.Collections.Generic; using System.Drawing; using System.IO; using System.Linq; using System.Text; namespace ADFReader{ class Program { public static int ApplyOffset(int data, int offset) [Code] ...
how to extract certain cells for an excel file that is continuously updating. I had a look at [URL] since they provide a .h library that is useful for this situation, but could not find any code.
