Oh a garbage collector in C, now that is an interesting assignment I could hand my students
How told you that I said C has a garbage collector?
Евгений
Danya🔥
Oh a garbage collector in C, now that is an interesting assignment I could hand my students
If you do not mind me asking, where do you teach?
Ludovic 'Archivist'
How told you that I said C has a garbage collector?
You didn't, you just gave me the idea
Ludovic 'Archivist'
If you do not mind me asking, where do you teach?
In a few schools in france and online
Danya🔥
In a few schools in france and online
By schools you mean high schools or universities/colleges?
Ludovic 'Archivist'
By schools you mean high schools or universities/colleges?
colleges and engineering schools
Aman😒
Hi guy
Why my linear search program is not working properly?
#include<stdio.h>
int main( )
{
int a[10]={ 2,4,6,8};
int num,i,position,flag=0;
printf("enter the number to be searched?...");
scanf("%d",&num);
for(i=0; i<5; i++)
{
if( a[i]==num);
{
printf("the number is present at position:%d",i);
}
}
}
Semicolon after if statement check it again
\Device\NUL
C is many times better than Java. Java does not compile to a final native code. It uses JIT just in time compiler.
Python is like Qbasis it does not compile. So both Java and Python are very weak.
C is very very good. It compiles to native code and teachs real programming.
Real programming is writing in machine code directly
awerquade
𝕷𝖔𝖗𝖊𝖓𝖟𝖔
Hi guys, I wanted to ask you about the free() function when operating with buffers.
So, I know that we use free when dealing with dangling pointers and stuff like this, but I do not understand if it is needed with strings. For istance:
char buff[1024];
The code does its stuff (filling the buffer with strings and so on)
Now I don't need the buff anymore, thus the question: what do I do with it? I am tempted to use the free function as it follows:
free(buff);
Is it right? Or is it a mistake?
\Device\NUL
Hi guys, I wanted to ask you about the free() function when operating with buffers.
So, I know that we use free when dealing with dangling pointers and stuff like this, but I do not understand if it is needed with strings. For istance:
char buff[1024];
The code does its stuff (filling the buffer with strings and so on)
Now I don't need the buff anymore, thus the question: what do I do with it? I am tempted to use the free function as it follows:
free(buff);
Is it right? Or is it a mistake?
Wrong, stack allocated memory can't be freed until the program ends
Khaerul
𝕷𝖔𝖗𝖊𝖓𝖟𝖔
Wrong, stack allocated memory can't be freed until the program ends
Thank you very much, so this needs to be done only if I assign the string in the heap, right?
\Device\NUL
𝕷𝖔𝖗𝖊𝖓𝖟𝖔
thank you!
Ashraf
Hello,everyone.
I have a question from C.
I want to input integers like that:
3
1 2
2 3
3 4
The first line is a test case.The next ones are values,but i don't know how to write that one
Faramarz
Hello,everyone.
I have a question from C.
I want to input integers like that:
3
1 2
2 3
3 4
The first line is a test case.The next ones are values,but i don't know how to write that one
int main() {
int n;
printf("Enter a number: ");
scanf("%d", &n);
for(int i = 0; i < n; ++i)
{
for(int j = 1; j < 3; ++j)
printf("%d ", i+j);
printf("\n");
}
return 0;
}
I'm not sure if this is what you meant!
Ashraf
int main() {
int n;
printf("Enter a number: ");
scanf("%d", &n);
for(int i = 0; i < n; ++i)
{
for(int j = 1; j < 3; ++j)
printf("%d ", i+j);
printf("\n");
}
return 0;
}
I'm not sure if this is what you meant!
Actually no.
Think like that,I input the integer 3,then I also want to input the others,like arrays
Lakshya
Hello ! I'm Technical Recruiter at TechCurators. We are an assessment based company.
We need interns for *coding project*
*Details:*
30 ques 1 month
Stipend 7500
Lor certificate
Questions in language C+++
Test cases
If you are interested, kindly revert back with your contact details.
Danya🔥
Hello ! I'm Technical Recruiter at TechCurators. We are an assessment based company.
We need interns for *coding project*
*Details:*
30 ques 1 month
Stipend 7500
Lor certificate
Questions in language C+++
Test cases
If you are interested, kindly revert back with your contact details.
> 7500
Of what? US dollars per assignment?
Danya🔥
I'd join you for 7500$ per assignment
Mahad
Hello Everyone
Mahad
Can Anyone Help In C program
Mahad
HOW to repeat A Program Using Do While loop
Anonymous
What will be the logic of neither max nor min with c programming
Mahabub Alam
do {
statement(s);
} while( condition );
Mahad Use repeating conditions on while. It will repeat.
Hima
for(int i=1;i<n;i++)
{
auto it=mp.lower_bound((arr[i]+arr[i-1])/2);
mp.erase(it);
}
why the keys from the map are not being deleted?
Pavel
These are C++ metrics.. I'm yet to start learning it.. 👍👍
dot is used to reference a function or variable of a class using an object of that class (or reference to it).
Class object;
object.function();
:: is used to resolve scopes (e.g. namespaces, reference static variables/functions of a class, etc.)
https://stackoverflow.com/questions/15649580/using-scope-resolution-operator-in-c
Anonymous
Actually no.
Think like that,I input the integer 3,then I also want to input the others,like arrays
Implementing the above program with Newline and simple addition using while loop?
Anonymous
Ashraf
Can you show me the way?
Dima
Hmmm need more posers
Anonymous
Would it be fine If it is in Java ?
The logic would be same...just syntax will be different
Kevin
Does anyone do competitive coding here on Codeforces?
Naol D
Hello there everyone. i have a question in C. I defined a struct which is typedef but how can i include the struct inside itself ?
// example
typedef struct {
prop1 p1;
prop2 p2;
// here i want to include this
// struct as a pointer...
// but how ?
// object *ptr;
}object;
Pavel
Hello there everyone. i have a question in C. I defined a struct which is typedef but how can i include the struct inside itself ?
// example
typedef struct {
prop1 p1;
prop2 p2;
// here i want to include this
// struct as a pointer...
// but how ?
// object *ptr;
}object;
You probably can forward-declare "object" before you declare the struct. The name is unknown yet when you declare the pointer.
Naol D
You probably can forward-declare "object" before you declare the struct. The name is unknown yet when you declare the pointer.
which means i have to write the name first right ?
Pavel
which means i have to write the name first right ?
Yes, probably you can do
struct object; and then do what you did, not sure, not very familiar with this C syntax
Naol D
Yes, probably you can do
struct object; and then do what you did, not sure, not very familiar with this C syntax
yeah i can use that but i need to use typedef
Ivan
why this doesn't works?
https://www.online-ide.com/x8BG6yDPwe
Anonymous
why this doesn't works?
https://www.online-ide.com/x8BG6yDPwe
this is working for me i am able to a run a program, but I don't see the input screen actually, output screen is good.
Ivan
Why? It won’t let me enter a complete name with spaces in option 1?
Anonymous
not getting you
\Device\NUL
why this doesn't works?
https://www.online-ide.com/x8BG6yDPwe
Remained newline on input stream
\Device\NUL
std::cin doesn't ignore newline or EOF, it will remains on input stream
KBS
void SecureBuffer(const char *arg)
{
}
int main(int argc, char *argv[])
{
if(argc < 2)
return -1;
SecureBuffer(argv[1]);
return 0;
}
Complete the function SecureBuffer to ensure that an array of [10] can not be overflown via a Buffer overflow attack? 
\Device\NUL
void SecureBuffer(const char *arg)
{
}
int main(int argc, char *argv[])
{
if(argc < 2)
return -1;
SecureBuffer(argv[1]);
return 0;
}
Complete the function SecureBuffer to ensure that an array of [10] can not be overflown via a Buffer overflow attack? 
I don't even know what SecureBuffer is used for
X
void SecureBuffer(const char *arg)
{
}
int main(int argc, char *argv[])
{
if(argc < 2)
return -1;
SecureBuffer(argv[1]);
return 0;
}
Complete the function SecureBuffer to ensure that an array of [10] can not be overflown via a Buffer overflow attack? 
For instance sprintf(); and gets as well others can be very dangerous but I think that secureBuffer has been created by the user ? it doesn't return anything
X
You can buffer the memory when you reach the top of the max
KBS
void SecureBuffer(const char *arg)
{
}
int main(int argc, char *argv[])
{
if(argc < 2)
return -1;
SecureBuffer(argv[1]);
return 0;
}
Complete the function SecureBuffer to ensure that an array of [10] can not be overflown via a Buffer overflow attack? 
void SecureBuffer(const char *arg)
{
char values[9];
strcpy(const, values);
fprint(values);
}
int main(int argc, char *argv[])
{
if(argc < 2)
return -1;
SecureBuffer(argv[1]);
return 0;
}
Hope I'm correct?
\Device\NUL
\Device\NUL
And don't use fprintf family with blindly passed it into parameter.
printf(str)
This could lead to security holes if str contain % char. printf("%s", str) should be okay
KBS
#include<iostream>
using namespace std;
int main()
{
char buf[12];
cin.width(12);
cin>>buf;
cout<<"Contents in the buffer are"<<buf<<endl;
return 0;
}
 
In the program above, discuss the function of line 6 and what function does it do in terms of security.
Your answer:
🙏🙏🙏🙏🙏🙏
\Device\NUL
Now i Feel bad after answering your question before
KBS
You didn't answer my question directly bro, you only corrected it
KBS
#include<iostream>
using namespace std;
int main()
{
char buf[12];
cin.width(12);
cin>>buf;
cout<<"Contents in the buffer are"<<buf<<endl;
return 0;
}
 
In the program above, discuss the function of line 6 and what function does it do in terms of security.
Your answer:
🙏🙏🙏🙏🙏🙏
And the function of line 6 is to limit the input to 11 characters, the 12th character is used for the terminating null character
KBS
And the function of line 6 is to limit the input to 11 characters, the 12th character is used for the terminating null character
It's to avoid buffer overflow
Anonymous
It's to avoid buffer overflow
😁Hello guys i need help, i have the following exercise:
1- Ask the user to enter ten numeric values and sort these in ascending order.
values, storing them in a vector. Order the value as it is entered. show the
final on the screen the values in order. My code sorts after reading, but it asks to sort as values are read, how do i do it?
----------------------------begin of My code---------------------------
#include <iostream>
#include <array>
int main(){
std::array<int,10>v{};
//input values
for(int i = 0;i < v.size();i++){
std::cout<<"value-> ";
std::cin>>v.at(i);
}
// sorted array
int j{};
std::cout<<"Array sorted->";
while(j < v.size()){
for(int k = j+1; k < v.size();k++){
if(v.at(j) > v.at(k)){
int exchange{};
exchange = v.at(j);
v.at(j) = v.at(k);
v.at(k) = exchange;
}
}
// output array
std::cout<<" "<<v.at(j);
j++;
}
return 0;
}
------------end code---------------------------------------------
Anonymous
😁Hello guys i need help, i have the following exercise:
1- Ask the user to enter ten numeric values and sort these in ascending order.
values, storing them in a vector. Order the value as it is entered. show the
final on the screen the values in order. My code sorts after reading, but it asks to sort as values are read, how do i do it?
----------------------------begin of My code---------------------------
#include <iostream>
#include <array>
int main(){
std::array<int,10>v{};
//input values
for(int i = 0;i < v.size();i++){
std::cout<<"value-> ";
std::cin>>v.at(i);
}
// sorted array
int j{};
std::cout<<"Array sorted->";
while(j < v.size()){
for(int k = j+1; k < v.size();k++){
if(v.at(j) > v.at(k)){
int exchange{};
exchange = v.at(j);
v.at(j) = v.at(k);
v.at(k) = exchange;
}
}
// output array
std::cout<<" "<<v.at(j);
j++;
}
return 0;
}
------------end code---------------------------------------------
Johnson
/get cbook
Anonymous
Anybody with knowledge about multithreading in c++