Objective-C 中的算术运算符

下表显示了 Objective-C 语言支持的所有算术运算符。假设变量A持有 10，变量B持有 20，则 -

运算符	描述	示例
+	将两个操作数相加	A + B 将得到 30
-	从第一个操作数中减去第二个操作数	A - B 将得到 -10
*	将两个操作数相乘	A * B 将得到 200
/	将分子除以分母	B / A 将得到 2
%	模运算符，整数除法后的余数	B % A 将得到 0
++	递增运算符将整数值增加 1	A++ 将得到 11
--	递减运算符将整数值减少 1	A-- 将得到 9

示例

尝试以下示例以了解 Objective-C 编程语言中可用的所有算术运算符 -

在线演示

#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 );
}

编译并执行上述程序时，将产生以下结果 -

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

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