@programminginc - страница 2407

Patrick

How can I use std::string in GDB?

Guy

How can I use std::string in GDB?

What do you mean use std::string in gdb? you can read strings with x/s <string_ptr>

Patrick

What do you mean use std::string in gdb? you can read strings with x/s <string_ptr>

Well, being able to use a pointer as the std::string class

Guy

I don't think it's a thing

Patrick

Alright. Well, I have another issue actually

Patrick

in GDB after this line: void* sPtr = new std::string("hello"); Doing x/s sPtr Results in garbage. I'd like to declare a std::string on the heap, referenced in a void*, but it isn't working.

Guy

it's because std::string encapsulates many other things (http://www.cplusplus.com/reference/string/string/ )

Guy

when you use x/s sPtr you actually just try to read characters from that address until you reach a nullbyte. https://stackoverflow.com/questions/6776961/how-to-inspect-stdstring-in-gdb-with-no-source-code

Patrick

So I should use c_str

Patrick

but I can't cast my void* to std::string in GDB

Guy

anyways google it, I'm sure many others have encountered this specific issues

Patrick

but I can't cast my void* to std::string in GDB

I did try searching how to include std::string in GDB to no avail

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@codingmeme

Appiah Kumah

hello friends, please i need your help to solve a c++ problem. i have try but not getting it.

Appiah Kumah

questions A company want to transmit data over the telephone but is concerned that its phones could be tapped. All of the data are transmitted as two-digit integers. The company has asked you to write a program that encrypts the data so that it can be transmitted more securely. Your program should read a two-digit integer and encrypt it as follows: Replace each by ( the digit plus 7) and modulus 10). Then, swap the first digit with the second and print out the encrypted integer.

Appiah Kumah

questions A company want to transmit data over the telephone but is concerned that its phones could be tapped. All of the data are transmitted as two-digit integers. The company has asked you to write a program that encrypts the data so that it can be transmitted more securely. Your program should read a two-digit integer and encrypt it as follows: Replace each by ( the digit plus 7) and modulus 10). Then, swap the first digit with the second and print out the encrypted integer.

Please, any help??

Harsh

questions A company want to transmit data over the telephone but is concerned that its phones could be tapped. All of the data are transmitted as two-digit integers. The company has asked you to write a program that encrypts the data so that it can be transmitted more securely. Your program should read a two-digit integer and encrypt it as follows: Replace each by ( the digit plus 7) and modulus 10). Then, swap the first digit with the second and print out the encrypted integer.

It's easy Get the units place by n%10 and tens place by n/10 Let them be x and y. Now x+=7, x%=10 y+=7, y%=10 Answer= x*10+y As the numbers are swapped

Appiah Kumah

It's easy Get the units place by n%10 and tens place by n/10 Let them be x and y. Now x+=7, x%=10 y+=7, y%=10 Answer= x*10+y As the numbers are swapped

Thank you very much.

Harsh

Thank you very much.

Welcome mate 👊🏿

Appiah Kumah

Welcome mate 👊🏿

Please, am using c++ to code it. Please, can u guide me..please?

Harsh

Please, am using c++ to code it. Please, can u guide me..please?

Sure, but I already told you what to do. 1. Read a number from stdin 2. Get one's place and tens place by above method 3. Do the required operations 4. Add up 5. Print on screen

Appiah Kumah

Ok...thanks

Anonymous

It's easy Get the units place by n%10 and tens place by n/10 Let them be x and y. Now x+=7, x%=10 y+=7, y%=10 Answer= x*10+y As the numbers are swapped

Nice

Appiah Kumah

What about this? Write a program that displays the recommended weight in kilograms, given the user's age and height in centimeters. The formula for calculating the recommended weight is: Recommended=(height-100+ age%10) * 0.90.

Harsh

What about this? Write a program that displays the recommended weight in kilograms, given the user's age and height in centimeters. The formula for calculating the recommended weight is: Recommended=(height-100+ age%10) * 0.90.

Yea what's wrong? Just ask the age and height and calculate

Appiah Kumah

Should I give the user my own figure or ask for it, please.

Indolent

pastebin.com/hBs37hvL

Indolent

Can anyone explain to me what's happening in this code?

Harsh

Should I give the user my own figure or ask for it, please.

Ask for it

Appiah Kumah

Ask for it

ok thanks

Indolent

pastebin.com/hBs37hvL

What is the for each loop doing? And how do you access the pair vector?

Indolent

Anyone?

Artöm

What is the for each loop doing? And how do you access the pair vector?

For each iterates over a collection and processes each element

Artöm

Theres no pair in that code

Anonymous

If two sub classes with some same functions is there a way to prevent code duplication?

Artöm

Make base class inbetween, move common functions there

Som

#include<iostream> using namespace std;   class bank { private:      float p;      float r;      float t;      float si;      float amount;   public:     void read ( )           {                  cout <<" Enter Principle Amount :: ";                  cin>>p ;                  cout<<"\n Enter Rate of Interest :: ";                  cin>>r;                  cout <<"\n Enter Number of years :: ";                  cin>>t;                    si= (p *r*t) /100;                  amount = si + p;             }       void show( )          {                 cout<<"\n Entered Details are :: \n";                 cout<<"\n Principle Amount: "<<p;                 cout <<"\n\n Rate of Interest: "<<r;                 cout <<"\n\n Number of years: "<<t;                 cout <<"\n\n Interest : "<<si;                 cout <<"\n\n Total Amount : "<<amount<<"\n";          } };     int main () {     bank b ;       b.read ( );     b.show ( );       return 0; } Is this correct?