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2023-12-01

D语言支持以下赋值运算符 -

操作者描述
=它是简单的赋值运算符。 它将右侧操作数的值分配给左侧操作数C = A + B将A + B的值分配给C
+=它是添加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等于C = C + A.
-=它是减法AND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AND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等于C = C * A.
/=它是除AND赋值运算符。 它将左操作数与右操作数分开,并将结果赋给左操作数。C/= A相当于C = C/A.
%=它是模数AND赋值运算符。 它使用两个操作数来获取模数,并将结果赋给左操作数。C%= A等于C = C%A
<<=它是左移AND赋值运算符。C << = 2与C = C << 2相同
>>=它是右移和赋值运算符。C >> = 2与C = C >> 2相同
&=它是按位AND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
|=它是按位包含OR和赋值运算符C | = 2与C = C |相同 2

例子 (Example)

请尝试以下示例以了解D编程语言中可用的所有赋值运算符 -

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; 
}

编译并执行上述程序时,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