@programminginc - страница 3419

Anonymous

Your logic for deletion is wrong. Assume there are only 2 nodes in your list and both of them have the value 4. Now go through your code for this use case and you will figure out what is wrong.

As for the Segmentation fault, now assume there is only one node in your list with value 4 and go through your logic again. You will find out why it will crash at the while loop.

Kirk

Thank you! i see now

Ольга

Good day. As advised, I solved the problem with gets (), but still can not find an example on the Internet how to compare the elements of the structure and data from the user. I will be glad for any help https://onlinegdb.com/iYSv_SNbY

Ольга

How can I pass a dynamic array to a function? I still can not achieve the right option. I will be grateful for the hint

Vlad

How can I pass a dynamic array to a function? I still can not achieve the right option. I will be grateful for the hint

void foo(float* arr, int size);

Vlad

Or something like that

Vlad

Is it C or C++?

Ольга

C, but I have 2d matrix

Ольга

It is same like you say?

Vlad

C, but I have 2d matrix

float** ?

Vlad

Is it dynamically allocated?

Vlad

If so you'd have to pass two sizes

Vlad

And float**

Vlad

But it won't work for arrays on stack

Vlad

For arrays on stack you'd have to create a pointer array for it to be compatible

Ольга

But it won't work for arrays on stack

I'm sorry, but like it is stack? How it's look

Vlad

I'm sorry, but like it is stack? How it's look

int arr[2][3];

Vlad

Array with automatic lifetime duration

Ольга

Type it will be in the stack even if the size of the array is set by the user. Yes?

Vlad

Type it will be in the stack even if the size of the array is set by the user. Yes?

No. Size of an array must be known at compile time

Vlad

In C there's also VLA which does what you've described with the same syntax

Vlad

Those are also on stack.

Vlad

But allocated through alloca

Vlad

Anyway. The point is that their type decays into T*

Vlad

Not T**

Vlad

If your matrix has a flat buffer(i.e T*). Then you'd have to address it as arr[i * width + j]

Vlad

So you pass T* and two sizes into the function

Ольга

Oh Okey I try

Boom

hey, please I have doubt about c program

Boom

is there anyone to help me

Ehsan

is there anyone to help me

#dontasktoask

Boom

#include <stdio.h> void main() { int age[100][10] = {0}; int person; char name[28][10] = {0}, email[28] = {0}; printf("Enter the number of travellers\n"); scanf("%d", &person); for (int i = 0; i < person; i++) { printf("Enter the name of person %d\n", (i + 1)); scanf("%s", &name[i]); printf("Enter the age of person %d \n", (i + 1)); scanf("%d", &age[i]); } for (int j = 0; j < person; j++) { printf(" the name of person %d is %s \n", (j + 1), name[j]); printf(" the age of person %d is %d \n", (j + 1), age[j]); } }

Boom

#include <stdio.h> void main() { int age[100][10] = {0}; int person; char name[28][10] = {0}, email[28] = {0}; printf("Enter the number of travellers\n"); scanf("%d", &person); for (int i = 0; i < person; i++) { printf("Enter the name of person %d\n", (i + 1)); scanf("%s", &name[i]); printf("Enter the age of person %d \n", (i + 1)); scanf("%d", &age[i]); } for (int j = 0; j < person; j++) { printf(" the name of person %d is %s \n", (j + 1), name[j]); printf(" the age of person %d is %d \n", (j + 1), age[j]); } }

in these I'm getting garbage value for age

Boom

#include <stdio.h> void main() { int age[100][10] = {0}; int person; char name[28][10] = {0}, email[28] = {0}; printf("Enter the number of travellers\n"); scanf("%d", &person); for (int i = 0; i < person; i++) { printf("Enter the name of person %d\n", (i + 1)); scanf("%s", &name[i]); printf("Enter the age of person %d \n", (i + 1)); scanf("%d", &age[i]); } for (int j = 0; j < person; j++) { printf(" the name of person %d is %s \n", (j + 1), name[j]); printf(" the age of person %d is %d \n", (j + 1), age[j]); } }

please tell me what i'm doing wrong

Ehsan

in these I'm getting garbage value for age

age is wrong :)

Vlad

please tell me what i'm doing wrong

What do you need two dimensional arrays for?

Ehsan

it should be: int age[10];

Boom

What do you need two dimensional arrays for?

because I'm taking the input of several person and i have to print it number wise

Ehsan

What do you need two dimensional arrays for?

I think he confused char* and primitive data types

Boom

it should be: int age[10];

cant i take two dimensional array in int?

Vlad

because I'm taking the input of several person and i have to print it number wise

Okay. What you need to do is to declare a struct

Ehsan

cant i take two dimensional array in int?

you can but why?

Boom

because I'm taking the input of several person and i have to print it number wise

.

Vlad

And then make an array of structs

Boom

And then make an array of structs

ok

Ehsan

int age[10]; // 10 people ages

Boom

Okay. What you need to do is to declare a struct

but can you tell me why it is not working?

Boom

int age[10]; // 10 people ages

ohhhh

Ehsan

but can you tell me why it is not working?

you are using multi-dimensional array wrong

Boom

im sorry, im so dumb

Ehsan

no worries

Vlad

but can you tell me why it is not working?

You fucked up sizes. [10] ought to be first size

Vlad

For the strings

Ehsan

char[28][10] this is different than other data types, char is a primitive data type that stores a character. If you make a string (which what names are essentially) you need multiple characters; that's why you make it two dimensional.

Boom

You fucked up sizes. [10] ought to be first size

but i want 10 rows and in each row i want 100 characters to be filled

Ehsan

also it should be char[10][28]

Vlad

but i want 10 rows and in each row i want 100 characters to be filled

Yeah

Ehsan

which means (10 names with maximum of 28 character for each name)

Vlad

In C arrays are row margin