Show 例子 5
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2023-12-01
下表列出了C语言支持的赋值运算符 -
| 操作者 | 描述 | 例 |
|---|---|---|
| = | 简单赋值运算符。 将右侧操作数的值分配给左侧操作数 | C = A + B将A + B的值赋给C |
| += | 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. |
| -= | 减去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. |
| *= | 乘以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. |
| /= | 除法和赋值运算符。 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. |
| %= | 模数和赋值运算符。 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 |
| <<= | 左移AND赋值运算符。 | C << = 2与C = C << 2相同 |
| >>= | 右移AND赋值运算符。 | C >> = 2与C = C >> 2相同 |
| &= | 按位AND赋值运算符。 | C＆= 2与C = C＆2相同 |
| ^= | 按位异或和赋值运算符。 | C ^ = 2与C = C ^ 2相同 |
| |= | 按位包含OR和赋值运算符。 | C | = 2与C = C |相同 2 |
例子 (Example)
尝试以下示例来了解C中可用的所有赋值运算符 -
#include <stdio.h>
main() {
int a = 21;
int c ;
c = a;
printf("Line 1 - = Operator Example, Value of c = %d\n", c );
c += a;
printf("Line 2 - += Operator Example, Value of c = %d\n", c );
c -= a;
printf("Line 3 - -= Operator Example, Value of c = %d\n", c );
c *= a;
printf("Line 4 - *= Operator Example, Value of c = %d\n", c );
c /= a;
printf("Line 5 - /= Operator Example, Value of c = %d\n", c );
c = 200;
c %= a;
printf("Line 6 - %= Operator Example, Value of c = %d\n", c );
c <<= 2;
printf("Line 7 - <<= Operator Example, Value of c = %d\n", c );
c >>= 2;
printf("Line 8 - >>= Operator Example, Value of c = %d\n", c );
c &= 2;
printf("Line 9 - &= Operator Example, Value of c = %d\n", c );
c ^= 2;
printf("Line 10 - ^= Operator Example, Value of c = %d\n", c );
c |= 2;
printf("Line 11 - |= Operator Example, Value of c = %d\n", c );
}
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