C++ :: Possible To Show Maximum Length That Define A String
Aug 7, 2013
I need to know if it is possible to show the maximum length that is defined a string. I explained it with a example
void charLong(char *a){
cout <<"a defined max long = "<<a-><FUNCTION>;
} int main() {
char str[40];
charLong(&str);
return 0;
}
That the result was : a defined max long = 40.
I know that exist strlen() but this show only the length that is used, I need the definition length. is it possible?
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Mar 7, 2014
how to define a string of undefined length in c programming?
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Jan 29, 2014
I would like to understand a function on strings. Below is a code that I took from my teacher where the user inputs a string and prints out the length of the string.
Code:
#include <stdio.h>
#include <string.h>
int main() {
char str[100];
int i = 0;
[Code] ....
Now I understand that it returns the count in "int" so my question is:
Let's say i declared
Code: int count = 0;
at the beginning of the code and then made
Code: count = strlen(str);
why wouldn't i have the same result? Is there a way to do it also?
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Oct 9, 2014
In this code, i declared a string constant and trying to print the length of string. I know that if i write char a1[7] or char a1[] than it runs and give aggregate output, but in this case it is giving double length of string.
Code:
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
}
[code]....
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Nov 20, 2013
I'm trying some codes about string arrays and taking array length. But i have some problems. I can't get length of string and can't send to a function.
------------------------
#include<iostream>
#include<cstring>
#include<string>
using namespace std;
void GetLength(string);
std::string Words[]={"table","gun","programming"};
int main()
{std::string InputWord;
[Code]...
And how can send Matrix to other function?
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Jul 6, 2014
int t;
string a;
cin>>t;
getline(cin,a);
int len=a.length();
cout<<a<<" "<<len;
[code].....
why is the length 0?what can I do to get the correct length of the input string?
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Sep 7, 2013
I can't find any method of retrieving the length of an array except for doing this:
string first[] = {"a","be","see"};
int length = sizeof(first)/sizeof(first[0])
This is a very unconventional way of getting the length of an array.
first->length() would return 1 because it returns the number of letters in the first element of the array (which actually makes no logical sense).
first.size() would return 1 aswell as it's practically the same thing.
Since getting the length of an array is such a fundamental feat, how come I can't find a decent method of doing it?
Is there no buildt in method for this? If there is not, why has it not been implemented in the std?
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May 28, 2013
The input consists of one or more packets followed by a line containing only # that signals the end of the input. Each packet is on a line by itself, does not begin or end with a space, and contains from 1 to 255 characters.
it said 1 to 255 characters
i have to use getline(cin,str);
i tried str[255] but some error happen
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Dec 15, 2014
I am stuck here.
printf(" Enter a line of Morse Code for decrypting");
scanf("%s",phr);
len=strlen(phr);
for(a=0;a<36;a++) {
if(strcmp(phr, morse[a])==0)
printf("%c", alpha[a]);
};printf(" ");
The output :
[output] Enter line to encrypt:
..... -.... --...
converting...
5 [/output]
It should read all code, including null. between coded letter one space, between coded word three spaces.
The output should be:
[output]
56 7 [/output]
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May 7, 2014
consider the following code:
string input;
getline( std::cin, input )
In the code above, what is the maximum number of characters that can be read into variable input?
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Sep 20, 2013
Any way to get the length of a string? I have tried:
str.length
str.size
strlen()
Bob
Code:
// Exercise in string manipulation
#include <iostream>
#include <string>
void prtname(std::string str);
using namespace std;
int main() {
[Code]...
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Oct 20, 2013
Well what the title says, but I can't get it done. This is what I got
Code:
#include <stdio.h>#include <string.h>
int main(void)
{
char word;
int count;
printf("Enter a word.
[Code] ....
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Mar 27, 2013
I manage to split this str = "abc,def,123"
to s1 = "abc", s2 = "def", s3 = "123" with this piece of code using find and substr.
string str, s1, s2, s3;
getline(cin, str);
unsigned pos1 = str.find(",");
[Code] ....
But what should I do if the len of the string is unknown ?
For example, str = "abc,def,123,ghi,jkl,456,mno" and so on...
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Jun 7, 2013
PHP Code:
int processString(xxx)
{
//do something
return non-null terminated string length
}
To make the function work better we change its internals
PHP Code:
int processString(xxx)
{
//do something
return null terminated string length
}
This phenomenon can be observed by use of mutibyte to wide char conversions, string copy , concatenation functions of MS etc ....
Should I minus one in the return value of the second function to match both versions ?
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Dec 25, 2014
What I'm trying to do is to assign the length of a string to an integer variable. This is what i tried, it did not work.
Code:
printf("Enter a string
");
fgets(test_pass, 30, stdin);
strcpy(x,(strlen(test_pass)));
printf("%d", x);
This was just a test, and it did not compile. How to do this?
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Oct 10, 2014
I want to read a string of unknown length from stdin. I tried to follow the approach from this link. URL....My code is like this:
#include <iostream>
#include <string>
using namespace std;
int n;
cin >> n;
cout << "The value of n is " << n << endl;
}
[code]......
What I have noticed is that if I take integer input from cin (cin >> n;) in the above code before getline, the control does not stop on getline to take str as input from the console. If I don't do (cin >> n) before getline then the control stops on getline and takes the string as input.What is the best way to read from console multiple strings of unknown length in combination with the integers?
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Jul 10, 2013
The error is unclear but suggests Its received a bad pointer from another heap. It references dbgheap.c line 1322 and assertion failure
I have two string vector functions the first is called from the main function, the second is called from the first.
Their purpose is to receive a string of text and numbers in a semi-specific format, which the main body of the code reads from a text file, and delaminates the data as to return the first variable in the string as the variable name and the second as the variable value. Along the way it filters out a lot of the unwanted whitespace and punctuation.
E.g "{ VariableNameA 123 }" would be returned as "VariableNameA" And "123"
The code works perfectly for most of the lines in the text file but fails on one particular line where the first variable is 25 characters long. Basically it works for anything 22 characters or less. There are never more than 4 elements in the vector and each element is never intended to be longer than 25 characters.
It fails trying to return from the second split function to the first split function.
Is there a limit to the size of each vector element? I'm struggling to find a way round this without having to rewrite the whole thing.
vector<string> split(const string &s, char delim) {
vector<string> elems;
split(s, delim, elems);
return elems;
[Code] ....
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Feb 13, 2015
I have a question about finding the length of first sentence in an input string.
For example, let the input string be: dream in code. community learning
The length of first sentence is 13 (blanks are included). My question is how to create conditions for multiple punctuation signs (!,?)? If while loop goes like:
while((str[i]!='.')||(str[i]!='!')||(str[i]!='?'))
it gives me an error for infinite loop.
Code:
#include<stdio.h>
int main() {
char str[100];int i=0,br=0;
printf("enter a string:");
gets(str);
[Code] ....
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Mar 3, 2014
Write one program that receive a string, tokenize it by ' ' delimiter and show the output, using STL
So, I write:
#include <stack>
#include <iostream>
#include <vector>
#include <string>
using std::stack;
using std::cout;
[Code] .....
And...
Type any string and I'll say its proprieties:
> A B C
String length: 5
Words number: 3
Word 1: (split(input)[0])
A
Word 2: (split(input)[1])
B C
Word 3: (split(input)[2])
C
>
What am I doing wrong?
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Sep 30, 2014
I want this program by using only iostream.h & conio.h
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Sep 20, 2013
I have this code that determines the amount of people that can fit on some trains in different train combination scenarios. Here is the code:
#include<stdio.h>
#include<stdlib.h>
int main(void) {
int total_track, max_train_length, num_people, num_trains, tl;
printf("What is the total length of track, in feet?
[Code] ....
I need to now "pick the winner," or the highest value for num_people computed. How would I go about this and why?
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Jul 26, 2014
Suppose that a map is defined thus: map<sttring, int> mymap;
I wanna find k maximum values. Is there a way to find the maximum value in an efficient manner? Or else, How can I sort them and then find the k first elements?
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May 23, 2013
Is there a maximum capacity for stdin ?
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Mar 12, 2014
I got a code written in Java. But, I gave up writing code in Java. The program written is supposed to find the maximum subsequence sum. It's originally like this.
Code:
private static int maxSumRec (int [] a, int left, int right)
{
if(left == right)
if(a[left > 0])
return arr[left];
[Code] .....
I turned it into C, add some elements (to generate random numbers and change some variables' names), and becomes like this
Code:
int maxSumRec (val, left, right)
{
int x;
long int arr[val];
srand ( time(NULL) );
for(x=0; x<val; x++)
[Code] .....
It fails to compile. What have I done wrong? And I keep wondering why in the original code there is left and right variables and their values are never assigned. My c compiler (I use codeblocks) keeps telling me that. Idk why. My friend who keeps it in Java says it is fine but he cannot explain how his program works. What *is* left and right actually?
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Jan 4, 2015
I wrote a program to find the minimum and the maximum values from a vector. It works fine. What I'm trying to do is show the positions of said values and it's not working quite right. When I insert 4 elements: 2 0 1 3 it says:
"The min and max are 0 and 3
The position of the min is: 01
The position of the max is: 03"
What am I doing wrong? Here is the code:
Code:
#include <stdio.h>
#include <conio.h>
int main() {
int A[10], i, j, n, min, max, C[10], k=0, D[10], l=0;
printf("Insert no. of elements in vector A
[code]....
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Oct 29, 2014
Any way to determine the highest value of an array I created with random numbers. I am confused because the array needs to be initialized in the main, but populated in a function. I was able to populate it using a pointer variable and my results came out good for the initial array values and elements.
In order to figure out the max, I think I would need the results of the populated array. How do I do this when the populated array is stored in a pointer variable? Would I need to create a pointer to the first pointer I created? I tried creating another pointer to the initial array and printing that, but my results were not good.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
[Code].....
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