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2023-12-01

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