@programminginc - страница 811

Talula

#include <stdio.h> #include <string.h> int main() { char str1[10]= "awesome"; char str2[10]; char str3[10]; strcpy(str2, str1); strcpy(str3, "well"); puts(str2); puts(str3); return 0; }

Ritu Raj

#include <stdio.h> #include <string.h> int main() { char str1[10]= "awesome"; char str2[10]; char str3[10]; strcpy(str2, str1); strcpy(str3, "well"); puts(str2); puts(str3); return 0; }

Thank You 😇😇😇

Anonymous

Use strncpy not strcpy

Ritu Raj

Use strncpy not strcpy

Both are good!

Ritu Raj

One is limited 😇😇

Anonymous

One is limited 😇😇

One is horribly insecure and should be avoided just to make good habits

Anonymous

Both are good!

Propaganda

Ritu Raj

One is horribly insecure and should be avoided just to make good habits

Ohk

Ritu Raj

I'm wondering why the second approach doesn't work. It seems natural that it should (it works with other data types)? Could someone explain me the logic behind this?

Mihail

#include <stdio.h> #include <string.h> int main() { char str1[10]= "awesome"; char str2[10]; char str3[10]; strcpy(str2, str1); strcpy(str3, "well"); puts(str2); puts(str3); return 0; }

You don't need string.h if you're using C-strings btw

olli

I'm wondering why the second approach doesn't work. It seems natural that it should (it works with other data types)? Could someone explain me the logic behind this?

char s[100] = "abcd"; is identical to char s[100] = {'a','b','c','d'}. You cannot copy assign arrays hence the second example is not working.

Anonymous

When you have an array like char string[4] string is a pointer to the first element of the array So if the second did work you would be overwriting a pointer somewhere not the value it points to

olli

When you have an array like char string[4] string is a pointer to the first element of the array So if the second did work you would be overwriting a pointer somewhere not the value it points to

if string were a pointer to the first element the second would work! void foo() { char s[4] = "Hi!"; char * p = &s[0]; p = "whatever"; } string in your example is "array 4 of char" you cannot assign arrays, you can only initialize them

Anonymous

if string were a pointer to the first element the second would work! void foo() { char s[4] = "Hi!"; char * p = &s[0]; p = "whatever"; } string in your example is "array 4 of char" you cannot assign arrays, you can only initialize them

It is tho

- Raymond

Can someone tell me whi should I chose if over switch? Which one is better to use in most cases?

- Raymond

Well I just found one answer; you can't use double with switch

olli

switch - case is more limited than if statements, but there is no general rule.

- Raymond

Then why would you even have switch, if you can already do everything needed and even more in if statements ?

Ανδρέας 🇮🇹

char s[100] = "abcd"; is identical to char s[100] = {'a','b','c','d'}. You cannot copy assign arrays hence the second example is not working.

nani? why are we still using char array instead of std::string?

olli

nani? why are we still using char array instead of std::string?

I assumed it was C, so there is no string Additionally I think it'd interesting to know how the language handles this initialization

Ανδρέας 🇮🇹

I assumed it was C, so there is no string Additionally I think it'd interesting to know how the language handles this initialization

oh I see

Ritu Raj

if string were a pointer to the first element the second would work! void foo() { char s[4] = "Hi!"; char * p = &s[0]; p = "whatever"; } string in your example is "array 4 of char" you cannot assign arrays, you can only initialize them

✌️✌️✌️✌️✌️

Omkar

Hi

- Raymond

Quick question

- Raymond

#include <iostream> #include <cmath> #include <cstdlib> #include <ctime> using namespace std; double BTCPrice = 10000.111; int main() { cout << BTCPrice << endl; cin.get(); }

- Raymond

Why does this show the result as 10000.1 ?

- Raymond

and not 10000.111 ?

olli

Why does this show the result as 10000.1 ?

because defaultfloat is probably set and the precision is set to 6, so there are 5 digits before and one after the decimal point if you want a fixed number of digits after the decimal point you should std::fixed as formatting

- Raymond

👍

Anonymous

Pls solve questions 1

Anonymous

Read the rules, we are here to help you, not for doing your homework

Anonymous

Show us where you are facing the problem

Anonymous

Pls solve questions 1

😂😂

Anonymous

Can any one help me with gtk in c

Anonymous

I don't know how to change the size of fonts in gtk

Anonymous

I want to increase the size of fonts in the entry

Anonymous

I am new with gtk so I don't know much off it

Anonymous

Ok

Anonymous

Hi

Anonymous

Hi

Hey

klimi

Hi

Anonymous

Wt??

Jussi

Does anyone here know, why GPT partition GUID changes when I move the partitioned drive between PCs? I mean if I format a USB stick and plug it into another machine, the GPT GUIDs are different

Jussi

Sorry, it is an offtopic question

Anonymous

GUIDs are assigned once first time an OS encounters the disk, it doesn't changefor that specific system but will be different for different computers!

Anonymous

change for*

Anonymous

Hello guys

Anonymous

Lets say we have this array: array[]={1,2,3,4,5} How can we display this array like this: (1+2+3+4+5)

Anonymous

Ok sir

klimi

Lets say we have this array: array[]={1,2,3,4,5} How can we display this array like this: (1+2+3+4+5)

Just print it

Jussi