D 编程 - 赋值运算符

D 语言支持以下赋值运算符 -

操作员 描述 例子
= 这是简单的赋值运算符。它将右侧操作数中的值分配给左侧操作数 C = A + B 将 A + B 的值赋给 C
+= 它是加AND赋值运算符。它将右操作数添加到左操作数并将结果分配给左操作数 C += A 等价于 C = C + A
-= 它是减法与赋值运算符。它从左操作数中减去右操作数，并将结果赋给左操作数。 C -= A 相当于 C = C - A
*= 它是乘法与赋值运算符。它将右操作数与左操作数相乘，并将结果赋给左操作数。 C *= A 相当于 C = C * A
/= 它是除法与赋值运算符。它将左操作数与右操作数相除，并将结果赋给左操作数。 C /= A 相当于 C = C / A
%= 它是模与赋值运算符。它使用两个操作数取模并将结果分配给左操作数。 C %= A 相当于 C = C % A
<<= 它是左移AND赋值运算符。 C <<= 2 与 C = C << 2 相同
>>= 它是右移与赋值运算符。 C >>= 2 与 C = C >> 2 相同
&= 它是按位与赋值运算符。 C &= 2 与 C = C & 2 相同
^= 它是按位异或和赋值运算符。 C ^= 2 与 C = C ^ 2 相同
|= 它是按位或和赋值运算符 C |= 2 与 C = C | 相同 2

例子

尝试以下示例来了解 D 编程语言中可用的所有赋值运算符 -

现场演示 
import std.stdio;

int main(string[] args) {
   int a = 21;
   int c ;

   c =  a; 
   writefln("Line 1 - =  Operator Example, Value of c = %d\n", c );  
   
   c +=  a; 
   writefln("Line 2 - += Operator Example, Value of c = %d\n", c );
   
   c -=  a; 
   writefln("Line 3 - -= Operator Example, Value of c = %d\n", c );
   
   c *=  a; 
   writefln("Line 4 - *= Operator Example, Value of c = %d\n", c ); 
   
   c /=  a; 
   writefln("Line 5 - /= Operator Example, Value of c = %d\n", c );  
   
   c  = 200; 
   c = c % a; 
   writefln("Line 6 - %s= Operator Example, Value of c = %d\n",'\x25', c );
   
   c <<=  2; 
   writefln("Line 7 - <<= Operator Example, Value of c = %d\n", c ); 
   
   c >>=  2; 
   writefln("Line 8 - >>= Operator Example, Value of c = %d\n", c );
   
   c &=  2; 
   writefln("Line 9 - &= Operator Example, Value of c = %d\n", c ); 
   
   c ^=  2; 
   writefln("Line 10 - ^= Operator Example, Value of c = %d\n", c ); 
   
   c |=  2; 
   writefln("Line 11 - |= Operator Example, Value of c = %d\n", c );
   
   return 0; 
}

当您编译并执行上述程序时，它会产生以下结果 -

Line 1 - =  Operator Example, Value of c = 21
  
Line 2 - += Operator Example, Value of c = 42
  
Line 3 - -= Operator Example, Value of c = 21
  
Line 4 - *= Operator Example, Value of c = 441
  
Line 5 - /= Operator Example, Value of c = 21 
 
Line 6 - %= Operator Example, Value of c = 11
  
Line 7 - <<= Operator Example, Value of c = 44 
 
Line 8 - >>= Operator Example, Value of c = 11 
 
Line 9 - &= Operator Example, Value of c = 2

Line 10 - ^= Operator Example, Value of c = 0 
 
Line 11 - |= Operator Example, Value of c = 2
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