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Finding information in parts of txt document and storing them in variables

ifstream opens files named by cin but not when pulled from an array. Any difference between cin and a regular string definition?**Compiler error** - getline() function not accepting first parameter “std:ifstream” what is my issue?mixing cin and getline input issuesgetline does not take any inputgetline(cin, str) not workingHow to fix string user input without using cin.ignore() and clear()— C++?Why won't my cout statements print after opening a textfile?I'm having trouble dynamically allocating my structIterating values into a vector while reading in a file using getlineWhy is getline (from a file) to cout (that line) not printing the line?

1

I have a large .txt document holding information. It is structured in this kind of format:

ID: 54670
Gender: M
Name: John Doe
Address: Blah Blah Blah
Email: JohnDoe@.com

I'm trying to create a program that allows one to enter the ID. The program will find the ID in the text document and then store the ID,Gender,Name,Address, etc.. in variables.
I can search for the ID and print following lines. But I'm lost on how to store particular parts of each line and only storing the info from say 5 lines after finding the ID. This is all i have so far. Any pointers would be much appreciated. I have just started teaching myself to code in the last couple weeks. So you are all such a great resource.

struct userInfo

 int id;
 char gender;
 std::string name,address,email;
;
std::string search,line;
std::ifstream inFile;
inFile.open("iData.txt");

 if (!inFile)
 
 std::cout << "Was unable to open file!";
 return 1;
 

 std::cout << "Enter I.D" << std::endl;
 std::getline(std::cin, search);

 while (inFile.good())
 
 std::getline(inFile, line);
 if (line.find(search) != std::string::npos)
 
 std::cout << line << std::endl;
 
 
inFile.close();

c++ variables search ifstream

share|improve this question

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

add a comment | 

1

I have a large .txt document holding information. It is structured in this kind of format:

ID: 54670
Gender: M
Name: John Doe
Address: Blah Blah Blah
Email: JohnDoe@.com

I'm trying to create a program that allows one to enter the ID. The program will find the ID in the text document and then store the ID,Gender,Name,Address, etc.. in variables.
I can search for the ID and print following lines. But I'm lost on how to store particular parts of each line and only storing the info from say 5 lines after finding the ID. This is all i have so far. Any pointers would be much appreciated. I have just started teaching myself to code in the last couple weeks. So you are all such a great resource.

struct userInfo

 int id;
 char gender;
 std::string name,address,email;
;
std::string search,line;
std::ifstream inFile;
inFile.open("iData.txt");

 if (!inFile)
 
 std::cout << "Was unable to open file!";
 return 1;
 

 std::cout << "Enter I.D" << std::endl;
 std::getline(std::cin, search);

 while (inFile.good())
 
 std::getline(inFile, line);
 if (line.find(search) != std::string::npos)
 
 std::cout << line << std::endl;
 
 
inFile.close();

c++ variables search ifstream

share|improve this question

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

add a comment | 

I have a large .txt document holding information. It is structured in this kind of format:

ID: 54670
Gender: M
Name: John Doe
Address: Blah Blah Blah
Email: JohnDoe@.com

I'm trying to create a program that allows one to enter the ID. The program will find the ID in the text document and then store the ID,Gender,Name,Address, etc.. in variables.
I can search for the ID and print following lines. But I'm lost on how to store particular parts of each line and only storing the info from say 5 lines after finding the ID. This is all i have so far. Any pointers would be much appreciated. I have just started teaching myself to code in the last couple weeks. So you are all such a great resource.

struct userInfo

 int id;
 char gender;
 std::string name,address,email;
;
std::string search,line;
std::ifstream inFile;
inFile.open("iData.txt");

 if (!inFile)
 
 std::cout << "Was unable to open file!";
 return 1;
 

 std::cout << "Enter I.D" << std::endl;
 std::getline(std::cin, search);

 while (inFile.good())
 
 std::getline(inFile, line);
 if (line.find(search) != std::string::npos)
 
 std::cout << line << std::endl;
 
 
inFile.close();

c++ variables search ifstream

share|improve this question

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

ID: 54670
Gender: M
Name: John Doe
Address: Blah Blah Blah
Email: JohnDoe@.com

struct userInfo

 int id;
 char gender;
 std::string name,address,email;
;
std::string search,line;
std::ifstream inFile;
inFile.open("iData.txt");

 if (!inFile)
 
 std::cout << "Was unable to open file!";
 return 1;
 

 std::cout << "Enter I.D" << std::endl;
 std::getline(std::cin, search);

 while (inFile.good())
 
 std::getline(inFile, line);
 if (line.find(search) != std::string::npos)
 
 std::cout << line << std::endl;
 
 
inFile.close();

share|improve this question

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

share|improve this question

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

edited Mar 7 at 9:13

Some programmer dude

303k25265426

edited Mar 7 at 9:13

Some programmer dude

303k25265426

asked Mar 7 at 9:09

TheLawmanTheLawman

122

asked Mar 7 at 9:09

TheLawmanTheLawman

122

2 Answers
2

active

oldest

votes

1

you can create

map<int,list<string>>

Later parse your file once and split each line and store those value in your map

//Example code to fetch data from line
 std::getline(inFile, line); 
 int pos = line.find(":");
 std::string val = line.substr(pos+1, line.length());

after that you can just use

List<string> details = map.find[id];

share|improve this answer

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Knew i could count on this place. I have a few books but none of them mention maps. I appreciate your help. I have some refinements to do but you have helped me take a big step forward. Much appreciated.
  
  – TheLawman
  Mar 8 at 4:19
  

  
  
  
  

add a comment | 

0

you can read the file once and save the info in map so when given id you can get the info map[id].gender

share|improve this answer

answered Mar 7 at 10:34

user2320641user2320641

545

add a comment | 

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1

you can create

map<int,list<string>>

Later parse your file once and split each line and store those value in your map

//Example code to fetch data from line
 std::getline(inFile, line); 
 int pos = line.find(":");
 std::string val = line.substr(pos+1, line.length());

after that you can just use

List<string> details = map.find[id];

share|improve this answer

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Knew i could count on this place. I have a few books but none of them mention maps. I appreciate your help. I have some refinements to do but you have helped me take a big step forward. Much appreciated.
  
  – TheLawman
  Mar 8 at 4:19
  

  
  
  
  

add a comment | 

1

you can create

map<int,list<string>>

Later parse your file once and split each line and store those value in your map

//Example code to fetch data from line
 std::getline(inFile, line); 
 int pos = line.find(":");
 std::string val = line.substr(pos+1, line.length());

after that you can just use

List<string> details = map.find[id];

share|improve this answer

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Knew i could count on this place. I have a few books but none of them mention maps. I appreciate your help. I have some refinements to do but you have helped me take a big step forward. Much appreciated.
  
  – TheLawman
  Mar 8 at 4:19
  

  
  
  
  

add a comment | 

you can create

map<int,list<string>>

Later parse your file once and split each line and store those value in your map

//Example code to fetch data from line
 std::getline(inFile, line); 
 int pos = line.find(":");
 std::string val = line.substr(pos+1, line.length());

after that you can just use

List<string> details = map.find[id];

share|improve this answer

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

map<int,list<string>>

//Example code to fetch data from line
 std::getline(inFile, line); 
 int pos = line.find(":");
 std::string val = line.substr(pos+1, line.length());

List<string> details = map.find[id];

share|improve this answer

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

answered Mar 7 at 10:57

Apoorva RajuApoorva Raju

1318

0

you can read the file once and save the info in map so when given id you can get the info map[id].gender

share|improve this answer

answered Mar 7 at 10:34

user2320641user2320641

545

add a comment | 

0

you can read the file once and save the info in map so when given id you can get the info map[id].gender

share|improve this answer

answered Mar 7 at 10:34

user2320641user2320641

545

add a comment | 

you can read the file once and save the info in map so when given id you can get the info map[id].gender

share|improve this answer

answered Mar 7 at 10:34

user2320641user2320641

545

share|improve this answer

answered Mar 7 at 10:34

user2320641user2320641

545

answered Mar 7 at 10:34

user2320641user2320641

545

answered Mar 7 at 10:34

user2320641user2320641

545