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?
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.
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;
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?
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.
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.
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?
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.
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:
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?
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?
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
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.
