Show 例子
下表显示了Objective-C语言支持的所有算术运算符。 假设变量A保持10，变量B保持20，则 -
| 操作者 | 描述 | 例 |
|---|---|---|
| + | 添加两个操作数 | A + B将给出30 |
| - | 从第一个减去第二个操作数 | A - B将给-10 |
| * | 将两个操作数相乘 | A * B将给出200 |
| / | Divides numerator by denominator | B/A会给2 |
| % | 模数运算符和整数除法后的余数 | B％A将给出0 |
| ++ | 递增运算符将整数值增加1 | A ++将给出11 |
| -- | 递减运算符将整数值减1 | A-- will give 9 |
例子 (Example)
尝试以下示例来了解Objective-C编程语言中可用的所有算术运算符 -
#import <Foundation/Foundation.h>
int main() {
int a = 21;
int b = 10;
int c ;
c = a + b;
NSLog(@"Line 1 - Value of c is %d\n", c );
c = a - b;
NSLog(@"Line 2 - Value of c is %d\n", c );
c = a * b;
NSLog(@"Line 3 - Value of c is %d\n", c );
c = a/b;
NSLog(@"Line 4 - Value of c is %d\n", c );
c = a % b;
NSLog(@"Line 5 - Value of c is %d\n", c );
c = a++;
NSLog(@"Line 6 - Value of c is %d\n", c );
c = a--;
NSLog(@"Line 7 - Value of c is %d\n", c );
}
编译并执行上述程序时，会产生以下结果 -
2013-09-07 22:10:27.005 demo[25774] Line 1 - Value of c is 31
2013-09-07 22:10:27.005 demo[25774] Line 2 - Value of c is 11
2013-09-07 22:10:27.005 demo[25774] Line 3 - Value of c is 210
2013-09-07 22:10:27.005 demo[25774] Line 4 - Value of c is 2
2013-09-07 22:10:27.005 demo[25774] Line 5 - Value of c is 1
2013-09-07 22:10:27.005 demo[25774] Line 6 - Value of c is 21
2013-09-07 22:10:27.005 demo[25774] Line 7 - Value of c is 22
