Yahoo Web Search

Search results

1. Top results related to operators in c and c++

   • C string to uppercase in C and C++

     Top Answer

     Answered Oct 12, 2015 · 30 votes

     The problem is that there is no sequence point in

     while (*beg++ = toupper(*beg));-

     So we have undefined behavior. What the compiler is doing in this case is evaluating beg++ before toupper(*beg) In C where in C++ it is doing it the other way.

     Check all answers on Stack Overflow

     1/5

   • C++ Casting Operators and traditional C casting operators

     Top Answer

     Answered Dec 26, 2011 · 8 votes

     Google's C++ Style Guide gives some motivation for using the C++ style casts:

     The problem with C casts is the ambiguity of the operation; sometimes you are doing a conversion (e.g.,(int)3.5) and sometimes you are doing a cast (e.g., (int)"hello"); C++ casts avoid this. Additionally C++ casts are more visible when searching for them.

     I like the C++ casts because they make what you're intending to do very explicit, allowing the compiler to catch incorrect usage.

     For example, if you know you intend to only do a numeric conversion to an integer, static_cast will only compile when that numeric conversion makes sense. As you showed in your example code, the C style casts will perform a cast regardless of the validity.

     The C++ casts are really just for better documentation of intentions, and compile-time protection against unintended usage.

     Check all answers on Stack Overflow

     2/5

   • C++ Wrap cin and cout in class - Overload << and >> operators

     Top Answer

     Answered Sep 15, 2012 · 7 votes

     I got a working code that can handle the stream manipulators. You can see my code in action in this Ideone page

     Here is the code:

     #include <iostream>-typedef std::ostream& (*manip) (std::ostream&);class console {};template <class T> console& operator<< (console& con, const T& x) { std::cout << x; return con; }template <class T> console& operator>>(console& con, T& x) { std::cin >>x; return con; }console& operator<< (console& con, manip manipulator){ std::cout<<manipulator; return con;}int main() { console c; int a,b; c>>a>>b; c << "hello world"<<std::endl<<std::hex<<(a+b)<<std::endl;}

     Thanks @MooingDuck for the discussion that led me to a working answer and @111111 for the start point.

     Check all answers on Stack Overflow

     3/5

   • C++14 and C++17 in one project

     Top Answer

     Answered Aug 10, 2018 · 5 votes

     You just need to define _HAS_AUTO_PTR_ETC to 1: https://blogs.msdn.microsoft.com/vcblog/2017/12/08/c17-feature-removals-and-deprecations/

     However if std::auto_ptr was being used correctly std::unique_ptr should be a drop in replacement in most cases. You should just be able to do a search and replace from auto_ptr to unique_ptr.

     Check all answers on Stack Overflow

     4/5

   • C# and C++, out parameter does not return anything in a method

     Top Answer

     Answered Jan 19, 2022 · -1 votes

     You should pin the value for handling in unmanaged memory.

     byte longitud = 0;GCHandle gch = GCHandle.Alloc(longitud, GCHandleType.Pinned);-// Call your functionint resultado = RFIDReader.I15693_Inventorys(g_hDevice, chip, ref longitud);gch.Free();

     Check all answers on Stack Overflow

     5/5

   Show moreShow less

2. People also ask

   How many operators are there in C++?

   • .* C++ provides more than 35 operators, covering basic arithmetic, bit manipulation, indirection, comparisons, logical operations and others. Almost all operators can be overloaded for user-defined types, with a few notable exceptions such as member access (. and .*) and the conditional operator.

   C++ - Wikipedia

   en.wikipedia.org/wiki/C++

   See all results for this question

   How do I use a boolean operator?

   • Fig. 1 Fig. 2 The three most commonly used operators are AND, OR, NOT. These are known as Boolean operators. They can be used to broaden or narrow a search and to exclude unwanted search terms and concepts. You can type these operators in between your search terms (Fig. 1) or you can use the drop down options in the Advanced Search option (Fig. 2).

   Combining Search Terms: Using AND, OR and NOT - Search Strategy

   wit-ie.libguides.com/c.php?g=693702&p=4975715

   See all results for this question

   Why are overloadable operators important in C++?

   • The rich set of overloadable operators is central to making user-defined types in C++ seem like built-in types. Overloadable operators are also an essential part of many advanced C++ programming techniques, such as smart pointers.

   C++ - Wikipedia

   en.wikipedia.org/wiki/C++

   See all results for this question

   Should C++ work with other programming languages?

   • C++ should work alongside other existing programming languages, rather than fostering its own separate and incompatible programming environment. If the programmer's intent is unknown, allow the programmer to specify it by providing manual control. C++ is standardized by an ISO working group known as JTC1/SC22/WG21.

   C++ - Wikipedia

   en.wikipedia.org/wiki/C++

   See all results for this question

3. www.geeksforgeeks.org › bit-magic-c-cpp-programsBit Magic C/C++ Programs - GeeksforGeeks

   www.geeksforgeeks.org › bit-magic-c-cpp-programs

   • Cached

   2 days ago · Bit Magic C/C++ Programs. Bit manipulation, also known as bit magic is the process of using bit-level operations to manipulate individual bits of a number. It uses bitwise operators such as AND, OR, XOR, right shift, etc. to manipulate, set, and shift the individual bits. This is used to improve the efficiency of our program and provide compact ...

4. stackoverflow.com › questions › 78522491c++ - Why is the overload for both the == and <=> operator ...

   stackoverflow.com › questions › 78522491

   • Cached

   1 day ago · In C++20, if a comparison isn't directly implemented, the compiler will also try to use rewrite candidates. Thanks to this, even if <=> isn't defaulted (which would implement all operators), we only have to implement == and <=>, and all other comparisons are rewritten in terms of these two.

5. en.wikipedia.org › wiki › C++C++ - Wikipedia

   en.wikipedia.org › wiki › C++

   • Cached

   1 day ago · C++ provides more than 35 operators, covering basic arithmetic, bit manipulation, indirection, comparisons, logical operations and others. Almost all operators can be overloaded for user-defined types, with a few notable exceptions such as member access (. and .*) and the conditional operator. The rich set of overloadable operators is central ...

   • Designed by: Bjarne Stroustrup
   • Stable release: C++20 (ISO/IEC 14882:2020), / 15 December 2020; 2 years ago

   • Developer: ISO/IEC JTC 1 (Joint Technical Committee 1) / SC 22 (Subcommittee 22) / WG 21 (Working Group 21)

6. Videos

   • 

     14:24

     youtube.com

     C++ Operators | Learn Coding

     Apr 3, 2023

     45.9K Views

   • 

     15:38

     youtube.com

     C_13 Operators in C - Part 1 | Unary , Binary and Ternary Operators in C | C programming Tutorials

     Dec 23, 2020

     444.9K Views

   • 

     22:33

     youtube.com

     Lec 16: Operators in C++ Programming- part1 | Arithmetic and Relational| C++ Tutorials for Beginners

     Jun 30, 2022

     33.8K Views

   View all

7. www.geeksforgeeks.org › rounding-floating-pointRounding Floating Point Number To two Decimal Places in C and C++

   www.geeksforgeeks.org › rounding-floating-point

   • Cached

   3 days ago · First Method:- Using Float precision. C++ C. #include<bits/stdc++.h> using namespace std; int main() { float var = 37.66666; // Directly print the number with .2f precision cout << fixed << setprecision(2) << var; return 0; } // This code is contributed by shivanisinghss2110. Output. 37.67.

8. wit-ie.libguides.com › cCombining Search Terms: Using AND, OR and NOT - Search ...

   wit-ie.libguides.com › c

   3 days ago · The three most commonly used operators are AND, OR, NOT. These are known as Boolean operators. They can be used to broaden or narrow a search and to exclude unwanted search terms and concepts. You can type these operators in between your search terms (Fig. 1) or you can use the drop down options in the Advanced Search option (Fig. 2).

9. www.geeksforgeeks.org › vector-operationsVector Operations - GeeksforGeeks

   www.geeksforgeeks.org › vector-operations

   • Cached

   4 days ago · Operations on Vectors. Operations on vectors are the vectors that are performed especially on vector quantities, such quantities have both magnitude and direction, and operating them with normal rules of mathematics is not possible. So we have to use various vector operations that include, Addition of Two Vectors. Subtraction of Two Vectors.

10. clang.llvm.org › classclang_1_1BinaryOperatorclang: clang::BinaryOperator Class Reference

    clang.llvm.org › classclang_1_1BinaryOperator

    • Cached

    4 days ago · This expression node kind describes a builtin binary operation, such as "x + y" for integer values "x" and "y". The operands will already have been converted to appropriate types (e.g., by performing promotions or conversions). In C++, where operators may be overloaded, a different kind of expression node ( CXXOperatorCallExpr) is used to ...