C++ :: Compare 2 Dates From Strings / Char Or Int
Mar 16, 2014
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.
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Jun 13, 2013
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?
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Jan 14, 2014
I want to compare dates of first week of every year input by user to determine that what was the day on 02/01/1998 compare to 02/01/2014, or 04/01/2001 compare to 04/01/2003.
I want to compare from 01/01/1997 , 07/01/2014.
For example user enter first date 04/01/2002 and other date 04/01/2003, then the program show that there was tuesday on 04/01/2002 and monday on 04/01/2003.
[Code] ......
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Feb 8, 2014
Code for converting strings to Dates in C++.
Example: What is the date:
User response: 12/05/14
Any way I can code this to recognize it as a date, and make it so that the date is sortable? Not referring to the system date, but a user input date.
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Jan 4, 2014
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?
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Sep 1, 2014
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 ?
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Oct 14, 2013
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
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Oct 29, 2014
It should report whether or not, ignoring case, they are the same.
#include <stdio.h>
#include <string.h>
using namespace std;
[Code].....
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Oct 29, 2014
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] ....
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May 5, 2014
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] .....
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Apr 2, 2013
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.
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Jul 10, 2013
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
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Sep 19, 2013
I understand you can do
char* charpointer[2];
charpointer = "12";
if (charpointer[0] == '1'){
}
but how can we test for a range? 0-1? so I can compare it to '12'
I wouldn't want to do charpointer[0] == '1' && charpointer[1] == '2' though.
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Jan 28, 2013
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).
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Dec 3, 2014
how can i compare an element of the char array and string with single chsracter also how to compare char array to cpp string
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Jan 12, 2015
I have created a char string[100]. I know this array will be big enough for its purpose. The problem is that it often too big. When I print this string array I get the text plus a lot of gobbledygook at the end which I assume is the extra memory at end of string array. How would I approach trimming this using just C.
I suppose I could nest a for loop that adds to a new array that has a size determined by a counter(although this would give a warning being that a VAR is determining size of array) but I suppose there is a much simpler way to do this.
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Apr 15, 2014
The goal is to merge two files of names, sort them and remove duplicates.I've managed to merge the two files into a single char array and sort them with a function so they are alphabetical.I'm having problems removing the duplicate entries from the array. Here is my code:
Code:
#include <stdio.h>
#include <string.h>
#define NUMSTR 10
#define STRLNG 9
[Code]....
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Sep 2, 2013
How to insert strings into an array of type char and also delete strings from that char array.
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Feb 25, 2014
I am trying to read strings to an char array from an .exe file and then i would check some of the strings, but the problem is that the only thing that is read from the file is the first string (MZ) and an 'square' that is some incorrect character. I am using fread to read from the file. Here is my code:
FILE * pFile;
long lSize;
char * buffer;
size_t result;
pFile = fopen("my_file.exe", "rb");
if( pFile == NULL) exit(1);
fseek(pFile,0, SEEK_END);
[Code] ....
(I want to read the whole file, its not that big)...
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Feb 16, 2014
I am having issues getting this working. This is a simple program that is designed to ask a user if he would like to enter a string, if yes, the user is prompted to enter it and its stored in a char array. User is then asked if he wants to enter another string... Once user responds no, the program outputs the strings and the program ends...
Note: I'm using in.getline(myarray[i], MAX, ' '), to avoid white space problems if user enters a space. Lastly I would like the option of letting user enter any number of strings, but how would you do this when declaring the 2 dimensional char array?
#include <iostream>
#include <string>
using namespace std;
const int MAX = 81; //max char is sting is 80
int main(){
string y_n;
bool go = true;
[Code] ....
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Oct 26, 2013
How i can easly calculate the difference between two dates ?
Example :
Date 1 = 12 March(3)
Date 2 = 24 November(11)
Result = 258 days
how to do this in C++ ?Btw i don't want to use date functions or something like that.I want to do it with simple math formula.
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Mar 6, 2015
I'm supposed to make a program that can tell which date, out of any number of dates entered by the user, is the earliest date. However, this is based off another program that I did not do in the last chapter. Since it's a pretty simple program to use as the base for the more "generalized" one, I decided to make the more basic one that can only take two dates, first. If it was just one integer, I could just use date1 for the first date and date2 for the second date, but each date uses 6-8 separate numbers.
how do I tell it something like, "if(date1 < date2)", with date1 and date2 including their month, day, and year. I could do a separate integer name/tag (I forgot what they're called) for each number, but that sounds like doing a lot more adding and subtracting, and like it could easily get messy.Should I, or can I, add all the numbers under the "date" together to see which date has the "lowest number" or "earliest date", or should I somehow handle each number, that is month, day, and year, separately?Here's the code so far:
Code:
include <stdio.h>int main(void)
{
int date1, date2;
printf("Enter first date (mm/dd/yy):
");
scanf("%d/%d/%d", &date1);
printf("Enter second date (mm/dd/yy):
}
[code]....
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Jul 23, 2013
my problem is naming the function larger() with "int". At least that is what my compiler is leading me to believe.
Code:
#include <stdio.h>
struct Date{
int month;
int day;
int year;
};
[code]....
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Feb 4, 2013
I have a simple table in SQLite:
Column 1: vistDate (stored as date)
Column 2: mileage
As a test, I created one row,
visitDate = 03/02/2013
Mileage = 10
I want to be able to add all the mileage between two dates but in my SQLite query, it returns zero mileage if the first date is not in the same month.
I am inputting the dates in the dd/mm/yyyy format above. It works fine for
Date 1: 01/02/2013
Date 2: 04/02/2013
i.e. 10 miles is returned as answer
but if Date1: 30/01/2013 I get Null.
Here's the query:
SQLiteExec("SELECT SUM(mileage) FROM mileageTable WHERE visitDate BETWEEN '01/02/2013' AND '04/02/2013')
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Oct 7, 2014
I want that my DatePicker look like this:
The idea is for example if you a owner of Travel Agency and have website, when client want to go direct on your adrress in city that he or she can see on website that every weekend agency dont work(red color in calendar), other days they work(green) except of period 10.11-20.11 when they have vacation(numbers in calendar from 10.11-20.11 will be in yellow color).
I want to implement painting particular days in calendar by some logic.I suppose that I need to create my own class and inherit DatePicker from WPF, but what to override to get this if the inheritance DatePicker is the solution?
Attached image(s)
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Dec 7, 2014
In this project a user needs to enter a numeric month and a year. The output is a single calendar month with the name of the month followed by a grid of the days. My issue is that my day alignment is off. for example: if you enter the month of December (12) and this year 2014 it says the month started on a Wednesady when in fact it started on a Monday. I am not sure if its my leap year calculaion or what.
#include<iostream>
using namespace std;
#define TRUE 1
#define FALSE 0
char *months[] = {
" ",
[Code] ....
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