D 语言 - 赋值运算符
D 语言支持以下赋值运算符 −
| 运算符 | 描述 | 示例 |
|---|---|---|
| = | 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 |
| += | 是加法与(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 相当于 C = C + A |
| -= | 它是减法与(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 |
| *= | 它是乘法与(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 相当于 C = C * A |
| /= | 它是除法与(AND)赋值运算符。 它将左操作数除以右操作数，并将结果赋给左操作数。 | C /= A 相当于 C = C / A |
| %= | 它是取模与(AND)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 |
| <<= | 它是左移与(AND)赋值运算符。 | C <<= 2 相当于 C = C << 2 |
| >>= | 它是右移与(AND)赋值运算符。 | C >>= 2 相当于 C = C >> 2 |
| &= | 它是按位与(AND)赋值运算符。 | C &= 2 相当于 C = C & 2 |
| ^= | 它是按位异或(OR)和赋值运算符。 | C ^= 2 相当于 C = C ^ 2 |
| |= | 它是按位或(OR)和赋值运算符 | C |= 2 相当于 C = C | 2 |
示例
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 −
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;
}
当你编译并执行上面的程序时，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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