+ 1
Please help. Why numbers don't swap?
4 Answers
+ 10
Георгий Чуйко you can swap two numbers without using a temporary or third variable if you can store the sum of numbers in one number and then minus the sum with other number something like:
a = 3;
b = 5;
a = a + b; // 8
b = a - b; // 3
a = a - b; // 5
a = a + b;
b = a - b; // actually (a + b) - (b),
// so now b is equal to a.
a = a - b; // (a + b) - (a),
// now a is equal to b.
Now you have a = 5 and b = 3, so numbers are swapped without using a third or temp variable.
+ 4
Use this
int x = 5;
int y = 6;
int swap;
SOPln("input" + x "and" + y);
//Swapping part
swap=a;
a=b;
b=swap;
SOPln("output" + x + "and" + y);
//end
+ 2
Thanks