C :: How To Convert Part Of String And Integer
Jan 2, 2014
I'm having a problem converting part of a string to an integer.I used strtok to seperate my string and I have also a function for atoi but how to apply it to my strtok function.What i need is to change the char *years to an int.Have a look of what I got:
Code:
int main() {
char sentence[]="trade_#_2009_#_invest_#_DEALING";
char *word=strtok(sentence, "_#_");
char *year=strtok(NULL, "_#_");; // assigning NULL for previousely where it left off
char *definition=strtok(NULL,"_#_");
char *synonyms=strtok(NULL,"_#_");
[code]...
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Jul 9, 2014
I need to convert below value char *time="00.00.05".
I need to convert this to hh/mm/ss ....
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Oct 2, 2013
I have been trying to write a function which can convert a number from an unsigned long integer to a readable ASCII character string. this is what I have come up with, but I am receiving some very strange characters in return. Could the problem be that I am telling a char to = an unsigned long int, (cString[i] = product[i])?
void convertToString(unsigned long con) {
unsigned long product[10];
char cString[10];
const unsigned long begConvert = 10 ^ 10;
[Code] ....
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Jan 6, 2015
I am supposed to convert a string made of many numbers between every number spaces are between, to an integer variable for every number..
How am I supposed to get over this problem?
Example: String: " 322 52 231"
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Feb 4, 2014
I'm just learning and C. Here is a code snippit from a program that will compile. It's function is to validate credit card numbers. I have an error I can't find though. the last print statement shows the conversion in reverse string (as integers). Here is the code:
int main (void)
{
char cn[17];
char *cardtype;
int n0,n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,n14, n15;
int s1,s2,s3,s4,s5,s6,s7,s8;
int oddsum;
int sum;
int total;
int validate;
}
[code]....
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Nov 13, 2014
I would like to know how I can convert a string which represents a date to an integer.
#include <iostream>
using namespace std;
#include <string>
int main(){
string actual_date("18/10/2000");
int date = ????????
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Sep 4, 2013
// prompts the user for a non-negative numbers (>= 0)
// reads in the a number and checks
// keeps re-prompting user if the input is invalid (negative)
[Code].....
How do I go about Populating the elements in the array created, I keep getting a compiler error on this vArr[i] = tmp_stream.str.at(i);
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May 12, 2014
My intent was to convert the string variable for the year to an integer data type. The code compiles but now cannot run on my system. I'm not sure what's going as to what the program is displaying.
Objective: Prompt the user for two years. Print all Comedy movies that were released between those two years.
#include <iostream>
#include <cstdlib>
#include <string>
#include <fstream>
#include <cctype>
using namespace std;
struct Movie {
string name;
[Code] .....
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Jan 28, 2015
How do I convert just the number from position 4 to 15 from this char array and convert to int and save to variable
char numbers[]="54155444546546545643246543241465432165456";
the real char got 1000 digits this is just example how do i convert chars from numbers[4] to numbers[15] and save them as one number ? in this case i will get int x = 5444546546545643 as u can see char numbers as a example above
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Nov 26, 2012
I have the following string: "type computer {dell}"
And I want to remove the {dell}
So that the output on the screen type computer
Or delete any clause between the two brackets {}
How do i do that ?
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Sep 29, 2014
Code:
// string::erase
#include <iostream>
#include <string>
int main () {
std::string str ("This is an example sentence.");
std::cout << str << '
';
str.erase (10,8);
std::cout << str << '
';
Code:
Output:
I don't understand this program. What do these 2 numbers represent? The index of an element in a character array? The 10th character of the array is 'n' and 8th is a "space".
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Jul 10, 2013
Is there a function that can take out part of the string such as,
C:/Users
I want to take out Users.
I need the function to search for the first "/" and take out the last dir name
C:/windows would be c:
C:/users/bla would be c/users
Im programming in visual studio 6.0 MFC
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Dec 9, 2013
I have a string that contains a various number of lines which are each separated by and so what I want to do is to put each line into a node in a linked list.The relevant sections in my code are as follows:
Code:
typedef struct line *Line;
struct line {
char *text;
int lineNum;
Line next;
}
[code]....
Code:
strncpy(curr->text, text[prevPos], subLength);
With this line, I was hoping to make curr->text a string that is length subLength and begins at position prevPos in the text string. Except text[prevPos] is treated as a single character and not a string that begins at that position.
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Oct 15, 2014
Complete the function myitohex so that its converts 8-byte integer to string based hexadecimals.
Ex: printf("0x%s",myitohex(64,hex)); should printout "0x40" on the screen
char *myitohex(uint8_t i, char *result){
???
return result;
}
I wrote:
#include <stdio.h>
#include <stdint.h>
char *myitohex(uint8_t i, char *result){
*result = i + '0';
[Code] ....
0xp gets printed out which is wrong. I think *result = i + '0'; is wrong. What changes should i do on this row ?
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Nov 23, 2013
Is there anyway we can make an integer array to an integer...
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Feb 12, 2014
I have to implant a code to convert any integer to its 2'complement. I have already finished the first and the second part, which was to convert the integer to its binary representation, then to invert each digit in the binary representation. The third part is to add 1 to the binary representation.
// the last step is to add 1 to the binary number
int carryIn=0;
int carryOut;
for(itr= bainaryList.begin(); itr!= bainaryList.end(); itr++) {
//start comparing the possibilities of the values in both lists
if (((*itr)==0) && (carryIn== 0))
[Code] ....
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Mar 15, 2012
This is my c++ code...the problem is the RESULT is not coming and a bigger number is outputting...I dont know how to convert character to integer..
Code:
#include <iostream>
#include <math.h>
#include <stdlib.h>
using namespace std;
const int size = 50;
char infix[size],postfix[size],stack[size],dummy='?';
int top=-1;
[Code]....
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Nov 7, 2012
I'm trying to read in two instances of date and time (from user input) into a string value (MM/DD/YY hh:mm).
I need to be able to calculate the difference between the two in order to return how much time has elapsed from the first date/time to the second date/time.
What would be the most efficient way to go about obtaining said results?
I was thinking I need to convert each year, month, day, hour, and minutes into its own integer variable, after researching immensely online I'm still not sure how to convert from a string of characters to an integer.
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Mar 25, 2013
I am trying to read an array values from Tmin.txt file. I take array size from user viz. number of raw & column and then, read the following data from Tmin.txt file which look like this:
20 40 20 25 30
20 30 40 20 25
20 40 20 25 30
20 30 40 20 25
30 40 40 30 40
I am using getline, and then converting it to int by using atoi. But my code is not working.
Code :
// reading a text file
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
[Code] ....
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Jul 13, 2014
convert a positive integer code into its english name equivalent for digit. A valid code is of size between four (4) to six (6) digits inclusive. A zero is not allowed in the code.
example : if the input is 234056 the output is : INVALID CODE (PRESENCE OF ZERO)
if the input is 23456 the output is : TWO THREE FOUR FIVE SIX
if the input is 9349 the output is : NINE THREE FOUR NINE
if the input is 245 the output is : INVALID CODE (3 DIGITS)
if the input is 2344567 the output is : INVALID CODE (7 DIGITS)
step 1 : input code
step 2 : count the number of digits in the code
step 3 : if there is a zero in the code, "INVALID CODE (PRESENCE OF ZERO)" go to step 4
step 4 : if number of digits is mode or equal than 4 and less or equal than 6, go to step 5 else display the following message "INVALID CODE (<number of digits> DIGITS)
step 5 : call a function called digit_name to convert each digit into its
equivalent english name. display the result
step 6 : print the digits in reverse order
eg; if input is 13453, reverse order is 35431
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Jun 8, 2013
How do I convert date in integer format to DateTime without using DateTime?
I have tried:
Regex regex = new Regex(@"^(0[1-9]|1[012])(0[0-9]|1[0-9]|2[0-9]|3[01])(1[789]|[2-9][0-9])dd+$");
if (regex.IsMatch(txt_fromdate.Text) == true)
{
DateTime dt = DateTime.ParseExact(txt_fromdate.Text, "MMddyyyy", null);
}
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Oct 7, 2014
i was trying to solve a problem in SPOJ and what i wanted to do is to accept an input number from the user and to convert it into a array of integer.
Code:
#include<stdio.h>
int * toarray(int *num);
int main(void)
{
int testCases;
}
[code]....
But whenever i try to print the array in the main function i get only two value and the rest address
Code:
1//number of testCases
23456 //input number
6
2293452
4
2293700
1974439125
Process returned 0 (0x0) execution time : 4.152 s
Press any key to continue. However, if i tried to print the array from within the function, it prints the numbers just fine.
print the array elements from the main program, so that i would be able to go on with the rest of it
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Jun 3, 2013
i have mathematic operation and the result is near 70 digits....single variable cannot hold it....
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Mar 26, 2014
Ok, so I'm writing this code and when I build it keeps saying cannot implicitely convert type int to string even though I declared my variables as string. Why is it giving me this error?
private static string Repair()
{
string result="";
string beep;
string spin;
Console.WriteLine("Does your computer beep on startup?:(y,n)");
[Code]...
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Jun 8, 2014
heres the function:
string ToString ( const char * format, ... )
{
char buffer[256];
[Code]....
these function do the same of the sprintf() function. but instead we use a variable for add the result, i want to return the result. when i use it:
string f;
f=ToString("hello world");
gives me several errors:
"error: crosses initialization of 'std::string f'"
"error: jump to case label [-fpermissive]"
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Jun 15, 2013
I am using Visual Studio 2008. I just wonder if there are any library function in Windows SDK or MFC, or from third-parties, that can convert a UTF-8 string into Windows Unicode string(used in CString object).
Can MultiByteToWideChar or ATL String conversion macro like A2W to the conversion?
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