下表列出了所有支持Objective-C語言的算術(shù)運算符。假設(shè)變量A=10和變量B=20,則:
運算符 | 描述 | 示例 |
---|---|---|
+ | Adds two operands | A + B = 30 |
- | Subtracts second operand from the first | A - B = -10 |
* | Multiplies both operands | A * B = 200 |
/ | Divides numerator by denominator | B / A = 2 |
% | Modulus Operator and remainder of after an integer division | B % A = 0 |
++ | Increments operator increases integer value by one | A++ = 11 |
-- | Decrements operator decreases integer value by one | A-- = 9 |
嘗試下面的例子就明白了在Objective-C編程語言的所有算術(shù)運算符:
#import <Foundation/Foundation.h> main() { int a = 21; int b = 10; int c ; c = a + b; NSLog(@"Line 1 - Value of c is %d ", c ); c = a - b; NSLog(@"Line 2 - Value of c is %d ", c ); c = a * b; NSLog(@"Line 3 - Value of c is %d ", c ); c = a / b; NSLog(@"Line 4 - Value of c is %d ", c ); c = a % b; NSLog(@"Line 5 - Value of c is %d ", c ); c = a++; NSLog(@"Line 6 - Value of c is %d ", c ); c = a--; NSLog(@"Line 7 - Value of c is %d ", c ); }
當(dāng)編譯和執(zhí)行上述程序,它會產(chǎn)生以下結(jié)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