1.直接相加
int a;
a = 32 + 68;
NSLog (@"32和68的和是:%i", a);
2.使用变量相加
int a, b, c;
a = 32;
b = 68;
c = a + b;
NSLog (@"The sum of %i and %i is %i", a, b, c);
3. 加减乘除运算优先级
int a = 100;
int b = 2;
int c = 20;
int d = 4;
int r;
//加减乘除运算优先级
r = a - b;
NSLog (@"a - b = %i", r);
r = b * c;
NSLog (@"b * c = %i", r);
r = a / c;
NSLog (@"a / c = %i", r);
r = a + b * c;
NSLog (@"a + b * c = %i", r);
NSLog (@"a * b + c * d = %i", a * b + c * d);