Objective-C 中的算术运算符

下表列出了 Objective-C 语言支持的所有算术运算符。假设变量A为 10，变量B为 20，则 -

操作员	描述	例子
+	添加两个操作数	A + B 将为 30
-	从第一个操作数中减去第二个操作数	A - B 将给出 -10
*	将两个操作数相乘	A * B 将给出 200
/	分子除以分母	B/A 将给出 2
%	模数运算符和整数除法后的余数	B % A 将给出 0
++	自增运算符将整数值加一	A++ 会给出 11
--	自减运算符将整数值减一	A-- 会给 9

例子

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 -

现场演示

#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 );
}

当您编译并执行上述程序时，它会产生以下结果 -

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

Objective_c_operators.htm