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C++

05/06/19

What's the rationale for null terminated strings?

As much as I love C and C++, I can't help but scratch my head at the choice of null terminated strings:* Length prefixed (i.e. Pascal) strings existed before C* Length prefixed strings make several... more

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C++

05/01/19

unsigned int vs. size_t?

I notice that modern C and C++ code seems to use `size_t` instead of `int`/`unsigned int` pretty much everywhere - from parameters for C string functions to the STL. I am curious as to the reason... more

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C++

04/30/19

How to avoid "if" chains?

Assuming I have this pseudo-code: bool conditionA = executeStepA(); if (conditionA){ bool conditionB = executeStepB(); if (conditionB){ bool conditionC =... more

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C++

04/28/19

Are global variables bad?

In C/C++, are global variables as bad as my professor thinks they are?

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C++

04/28/19

What's the purpose of using braces (i.e. {}) for a single-line if or loop?

I'm reading some lecture notes of my C++ lecturer and he wrote the following: > 1. Use Indentation // OK> 2. Never rely on operator precedence - Always use parentheses // OK > 3. Always... more

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C++

04/24/19

return statement vs exit() in main()?

Should I use `exit()` or just `return` statements in `main()`? Personally I favor the `return` statements because I feel it's like reading any other function and the flow control when I'm reading... more

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C++ Computer Programming Syntax

04/20/19

What is C++ syntax?

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C++ C Linux Api

04/04/19

What is Linux’s native GUI API?

I hope this doesn’t come across as a stupid question but it’s always something I have wondered. Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS... more

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C++

03/27/19

Why use apparently meaningless do-while and if-else statements in macros?

In many C/C++ macros I'm seeing the code of the macro wrapped in what seems like a meaningless `do while` loop. Here are examples. #define FOO(X) do { f(X); g(X); } while (0) #define FOO(X)... more

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C++

03/27/19

How do you set, clear, and toggle a single bit?

How do you set, clear, and toggle a bit in C/C++?

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C++

03/27/19

What's this =! operator?

I was surprised by this code: if (a =! b) { // let it be on false ... }But `a` is never assigned by a value. What's this operator about?

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C++

03/27/19

How to avoid overflow in expr. A * B - C * D?

I need to compute an expression which looks like:`A*B - C*D`, where their types are: `signed long long int A, B, C, D;`Each number can be really big (not overflowing its type). While `A*B` could... more

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C++ Logic

03/19/19

C++ interview preparation?

I have a Phone interview coming up next with with a company which works in financial software industry. The interview is mainly going to be in C++ and problem solving and logic. Please tell me the... more

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C++

03/19/19

What is runtime polymorphism in C++?

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C++

03/18/19

Single quotes vs. double quotes in C or C++?

When should I use single quotes and double quotes in C or C++ programming?

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C++ C Logic Logical Operators

03/18/19

What happens when you logical not a float?

I assume this just returns an int. Is there anything else going on I should be aware of? C/C++ differences? float a = 2.5; !a; // What does this return? Int? Float?

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C++ C Linux Api

03/18/19

What is Linux’s native GUI API?

I hope this doesn’t come across as a stupid question but it’s always something I have wondered. Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS... more

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Answers •1

C++

03/18/19

Why use pointers?

I know this is a really basic question, but I've just started with some basic C++ programming after coding a few projects with high-level languages. Basically I have three questions: 1. Why use... more

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C++

02/14/19

Problem solving process

Draw a Problem Analysis Chart (PAC), Interactivity chart ,IPO chart, Algorithmand flowchart for the following problems1. A painter wants to know the amount of paint needed to paint only the walls... more

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C++ Programming

02/01/19

C++ changing the char of Vector <string>

void encodeUpper (vector <string> &book, int &cipher){ string word; char asciiNum; for(int i=0;i<book.size();i++){ if... more

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C++

10/23/18

what is the code?

A bus line has busses with 30 gallon tanks. that it uses to travel to different cities. The company needs you to write a c++ program that will allow the clerk to input the roundtrip mileage to and... more

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C++ C Computer Science Programming

10/08/18

tricky c++ if else question

Why will it print the bold statements? what about Hi-5 " #include <iostream>using namespace std;int main (){ if ((4 < 2 ) && (3 == 3)) cout << "Hi-2 "; else if (3==3) cout... more

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C++ C Computer Science Programming

10/08/18

if else confusing problem?

In this program no matter how many times i run it it wont print out the statement in bold. shouldnt it print evert statement after else? it will only print "HI-6" #include... more

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C++ Psuedo Code C++ Program

07/31/18

Write a C++ if statement

Write a C++ if statement that displays the message “The score is invalid.” if the variable score is outside the range 0 through 100.*Assume the variable score has already been declared and... more

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C++ Psuedo Code

07/31/18

Convert the following C++ code statements to the equivalent C++ for loop code statements

14. Convert the following C++ code statements to the equivalent C++ for loop code statements:int count = 10;while (count <= 100){cout << "The count is " << count << endl;count++;} more

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What's the rationale for null terminated strings?

unsigned int vs. size_t?

How to avoid "if" chains?

Are global variables bad?

What's the purpose of using braces (i.e. {}) for a single-line if or loop?

return statement vs exit() in main()?

What is C++ syntax?

What is Linux’s native GUI API?

Why use apparently meaningless do-while and if-else statements in macros?

How do you set, clear, and toggle a single bit?

What's this =! operator?

How to avoid overflow in expr. A * B - C * D?

C++ interview preparation?

What is runtime polymorphism in C++?

Single quotes vs. double quotes in C or C++?

What happens when you logical not a float?

What is Linux’s native GUI API?

Why use pointers?

Problem solving process

C++ changing the char of Vector <string>

what is the code?

tricky c++ if else question

if else confusing problem?

Write a C++ if statement

Convert the following C++ code statements to the equivalent C++ for loop code statements

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