C++ 不使用算术、关系或条件运算符设置一个变量

给定三个变量a、b和c，我们的任务是在不使用任何算术、关系和条件运算符的情况下设置x的值。我们需要遵循以下规则。

遵循的方法

If c = 0
    x = a
Else // here, in this case, the c variable is binary
    x = b.

示例

Input: a = 5, b = 10, c = 0;
Output: x = 5
Input: a = 5, b = 10, c = 1;
Output: x = 10

算术运算符 C++代码

// here we are writing down the C++ programming language code to 
// demonstrate the concept of arithmetic operators
#include 
using namespace std;
// the main driver code functionality starts from here
int main()
{
    int JTP1, JTP2;
    JTP1 = 10;
    JTP2 = 3;

    // printing the sum 
    cout<< "JTP1 + JTP2= " << (JTP1 + JTP2) << endl;

    // printing the difference 
    cout << "JTP1 - JTP2 = " << (JTP1 - JTP2) << endl;

    // printing the product 
    cout << "JTP1 * JTP2 = " << (JTP1 * JTP2) << endl;

    // printing the division 
    cout << "JTP1 / JTP2 = " << (JTP1 / JTP2) << endl;

    // printing the modulo 
    cout << "JTP1 % JTP2 = " << (JTP1 % JTP2) << endl;

    return 0;
}

输出：

JTP1 + JTP2= 13
JTP1 - JTP2 = 7
JTP1 * JTP2 = 30
JTP1 / JTP2 = 3
JTP1 % JTP2 = 1

关系运算符

条件运算符

// here we are writing down the C++ programming language code to 
// demonstrate the concept of relational operators
#include 
using namespace std;
// the main driver code functionality starts from here
int main()
{

    // here, we are declaring the variables 
    int n1 = 5, n2 = 10, max;

    // using the relational operators, we are trying to find the largest one
    max = (n1 > n2) ? n1 : n2;

    // using the cout output statement, we are trying to print the largest one
    cout << "The largest number between " << n1
                        << " and " << n2
                        << " is " << max;

    return 0;
    // end of the program
}

输出：

The largest number between 5 and 10 is 10

不使用算术、关系或条件运算符来设置变量

C++ 代码

// here we are writing down the C++ programming language code to 
// demonstrate the concept of Setting a variable without using Arithmetic, 
// Relational or Conditional Operator
#include 
using namespace std;
// function to calculate the value of x returned to the driver code call
int calc(int a, int b, int c)
{
    return ((1 - c) * a) + (c * b);
}

// the main driver code functionality starts from here
int main()
{
    // assigning the values of the variables
int a = 45, b = 90, c = 0;

int x = calc(a, b, c);
// displaying the output value returned by the calc function
cout << x << endl;

return 0;
}

输出：

45

// here we are writing down the C++ programming language code to 
// demonstrate the concept of Setting a variable without using Arithmetic, 
// Relational or Conditional Operator
#include 
using namespace std;
// function to calculate the value of x returned to the driver code call
int calculate(int a, int b, int c)
{
int arr[] = {a, b};
return *(arr + c);
}
// the main driver code functionality starts from here
int main()
{
        // assigning the values of the variables
int a = 6, b = 7, c = 1;

int x = calculate(a, b, c);
// displaying the output value returned by the calc function
cout << x << endl;

return 0;
}

输出：

7