I am trying to compare a string that i have entered with a set of strings that have already been stored in a file. I am using strcmp function but i am not getting the result.
Code:
printf("
Enter string:");
scanf("%s",&m);
ptr_file =fopen("abc.text","r");
[Code] .....
How do I compare multiple datas?
I have climate data for 6 months and is trying to find the highest climate month among all 6 months. How do I do that?
I need to check my understanding from some questions about strings. How can numeric values stored as Strings be converted to numbers?
a)vector of required numeric data type
b)atoi function in cstdlib library
c)cout statement with required numeric data type
I picked b), I am aware of atoi, atol, and atof as methods to convert, but are there other methods?
What is the purpose of strncat function?
Combines n characters from source string into target string
C++ string provides:
a)convenient way to declare and manage character arrays
b)functions to manipulate strings
c)all of the above
d)none of the above
I picked c)
I am trying to figure out how to go about comparing two strings of numbers. I have two files that both contain numbers 1-50, one file has multiple repeating numbers while the other one just has 1-50.
I want to compare the files and count how many of each number a occurred and make a chart with * next to the number. First I figured I would use the strings like an array and compare them using nested loops. Then I noticed I have single and double digit numbers. The numbers in the files are printed as:
1 44 5 34 4
2 22 7 55 4
...... etc
Compared too:
1
2
3
4
5
......
50
I thought about using string stream and converting the string to int but wouldn't it just be a huge number when set to the int variable? Then I thought about a array initialized with 1-50 and compared to the file but I still have the issue with single and double digit numbers.
My question is how can I just read one number at a time, either double or single digit?
I have two char* that have the same data in (hypothetically).
std::vector<char*> Buff;
Buff = Split(Line, '.');
char* A = "data", B;
B = Buff.at(0)
Where Split is a function that I made to split a string (Line in this case) into a char* vector, this string contains a line from a file. Line is char* too. The weird problem is when Buff data stored in its 0 position is given to B... because B is equal to A (hypothetically) but when this is compared to do certain functions they doesn't match!
Here an example:
std::vector<char*> Buff;
Buff = Split(Line, '.');
char* A = "map", B;
B = Buff.at(0) // Buff.at(0) should be "map" and is apparently "map"
[Code].....
NOTE: I didn't use switch to compare Cmd because I want it separately for easier debugging.
Is there something wrong with my codes?? or what happened here with those hex values before the string in my variables?
In my book I have the following example : Code:
std::string str = "Hello";
std::string phrase = "Hello world";
std::string slang = "Hiya"; and i have these two rules to compare 2 strings object :
if two strings have different lenghts and if every character in the shorter string is equal to the corresponding character of the longer string, than the shorter string is less than the longer string.
if any characters at corresponding positions of two strings differ, then the result of the string comparison is the result of comparing the first character at wich the strings differ then my book says : if we apply the rules of the comparison we know that phrase is greater than str( ok i've understood this ) and that slang is greater than both slang and phrase ( why ?)
explain me rule number two ? in phrase and slang the characters differ and the first character that differ is not H so why my book says slang is bigger than phrase ?
How would you compare two strings in an if statement to determine which comes first in alphabetical order?
Try and keep it simple because i am currently new to the language
i have been trying to compare a date format from SYSTEMTIME and a date from a text file(string).But its not working. I tried to change both to string(using osstringstream),char* and int(using sscanf) to do the comparison but with no luck. its pretty simple all i want to do is get the current system date and compare it with the date from the text file. Below is my code:
char szcurrentDate[MAX_PATH] = "";
char szdate_time[MAX_PATH];
SYSTEMTIME st;
GetLocalTime (&st);
GetDateFormat(LOCALE_USER_DEFAULT,NULL,&st,"yyyy-M-d ",szcurrentDate,MAX_PATH); //current system date
//std::ostringstream mm;
[code].....
note : i tried displaying just szcurrentDate and szdate_time they show the date exactly the same. in string,char* or int formats.
It should report whether or not, ignoring case, they are the same.
#include <stdio.h>
#include <string.h>
using namespace std;
[Code].....
This program is supposed to compare 2 strings and print out a 1 if the characters match and a 0 if they dont. It compiles but doesnt give me the correct output.
Code:
#include <stdio.h>
#include <string.h>
void func();
int main () {
func();
return 0;
[Code] ....
I want to compare two string, and want to see differeince in int form. For example,
Code:
string first_string="0002AE1";
string second_string="0002AE2";
How can i calculate difference between two string? It is obvious difference between above two string is 1/-1, but difference would be 1.
Procedure to Compare 2 Strings with the following criteria
coding of the following function -
I have absolutely no clue where to start -
Given the following sets of numbers -
1154 1179 2154 2554 2484 2144 4515 1144 1517 4815 1481
Given the Index number of 1154
I want to search the numbers for the Index number of 1154
The search will return a True if I can find 3 or 4 same digits between the Index number and the 8 numbers
The search also have the following criteria -
meaning that -
1154 when compared to 1154 == true
1154 when compared to 1179 == false
1154 when compared to 2154 == true
1154 when compared to 2554 == false
1154 when compared to 2484 == false
1154 when compared to 2144 == false
1154 when compared to 4515 == true
1154 when compared to 1144 == true
1154 when compared to 1517 == true
1154 when compared to 4815 == true
1154 when compared to 1481 == true
the index number can also be of type - 1234, 1123, 1112, 1111
I want to make a string array from strings in a text file. Itry to do this but i couldn't do, where is my mistake?
Code:
#include <stdio.h>
#include <stdlib.h>
int main(){
char cumle[100],*c,*dene[50];
FILE *input;
input=fopen("input.txt","r");
[Code]...
Goal: Write a program that compares the values stored in the first array to the user inputted values in the second array.
In order to fix this error: [URL]...
I had to change my array initialization to one with a star in front of it:
char a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};
to:
char *a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};
I also changed my 2nd array to one with a star in front of it: char *a2[20];
What does this mean exactly? Putting a star in front of an array?
Also, I am now getting an "unhandled exception" when I try to get input for my 2nd array:
cin>>a2[i];
I have problem with string compare. I want to compare the string user input with a string in binary. And I don't know how to do it. Problem in function login();Here is the code: And you also can download file in attachment too..
Code:
#include<conio.h>#include<dos.h>
#include<stdio.h>
#include<process.h>
#include<string.h>
char nsb=1;
char ch, password[20], passlogin[20], inputpass[20], checked[20];
FILE *fp;
}
[code]....
i'm trying to compare a string to a certain string in an array, my code is as follows:
#include <iostream>
using namespace std;
int tu;
int nu=0;
[Code].....
I need to create a program which could create text files of the bits stored in avi file/binary file. My first requirement is to show 0s and 1s in the text representation . My second requirement is to create an avi file from this text file. I have tried few codings but either they give me error or they not playing the reconverted binary files.
View 6 Replies View RelatedI am trying to get a list of queries to work right now. I have it so that the user will input 1 of 5 things to compare twin primes in a list. I am just trying to get the queries working fully before actually determining the twin primes that need to be output. The console input will be something like "<= 61" and will display all twin primes from 3 to 61, inclusive.
Well, I thought I had it 100%... Then I realized I have a problem, though. So, I'm reading the string in until a space so I can read in the number after that. So that works fine, but then I also want the "all" and "random" console inputs to work, but they won't unless I put a space after them, which is what I'm trying to avoid...
So, I tried just simply asking for another console input after all of my if statements for the string compare after the first console input. That obviously doesn't work either, though, because it still only wants the first "getline" where it reads until the whitespace.
How to be able to do both on the same console input... The relevant code is posted below:
cout << endl << "What do you want to know about your list of twin primes?" << endl;
string qprompt1;
string qprompt2;
getline(cin, qprompt1, ' ');
string comp1 = ">";
string comp2 = ">=";
[Code] .....
I have this code :
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
[Code] ...
And this error occued with me I don't know why ???
myHeader.h:42:19: error: expected ")" before string constant
This code is compiled from file called myHeader.h ...
I'm trying to read a string and then compare it to a word.
My code:
char* cmd = "start";
std::cin >> cmd;
if (strcmp (cmd, "eval"))
eval ();
When the program gets to the cin part, it breaks.
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
string thisString = "yes";
vector<string> stringHere;
stringHere.push_back("no");
if (thisString == stringHere[0]) {
cout << "It worked." << endll;
}
does not appear to work.
I am working on a String compare program and i got the program to work properly i was just wondering how to put user input into quotes.
here is my programming
int main {
const int LENGTH = 40;
char s1[LENGTH], s2[LENGTH];
cout << "== String Compare ==" << endl;
cout << "Enter a word" << endl;
[Code] ....
the input is :
Dorito
dorito
the output needs to look like this:
"Dorito" comes before "dorito".
Ok, I'm having a few problems with strings, mostly string functions saying they're not able to compare a string with a char pointer.
int main()
{
int counter = 0;
int x, y, z;
[Code].....
My goal is to take in a command and store it in a string. Different commands have different amounts of information I need. One command is "new flight <flightnumber> <seats available>". First, I try to understand which command is being asked, using the first character to decide. Once I can assume which command is being attempted, I try to separate the string into smaller strings (words) using strtok. I then compare the words that should be constant (new and flight), to make sure the command is syntactically correct (which I use strcmp for). Then I'll go on to create a new flight, which is a class that takes in a char * and integer (which is why I need to convert a char * to integer).
How do I compare a string vector against an enumerated type? My code so far is:
void convertToLastFirst(vector<string>&names){
enum NameFormat{FIRST, LAST};
for (size_t i = 0; i < names.size(); i ++){
if (names[i] FIRST){
names[i] = LAST;
}
}
}
I am/we developing in C and we have a number of different programs. We also have problem to keep track of different versions of a specific exe file.
Is there any way to add version number when build a file so the version is added in the properties.
I doing this in a MFC c++ project in a .rc file. Is there a way (or a similar way) of doing this in C? Here its stored in the details section with product version 6.0.8:
Reposting this as I deleted my pervious post because I missed out some parts of the codes.
I am trying to read a textfile containing some informations in this format,I am able to extract everything except the itemId.