What is the function of variable temp

Answer 1

hi,
temp car used to store the value of var temporarily.
but this temp will consume some resources and u can avoid to use this temp.
with using temp var to swap two numbers
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swap=changing the value of two variables.
temp=a;
a=b;
b=temp;

here value of a and b is 5 and 10
then after executing the above code the value of a and b is 10 and 5 respectively.

without using temp variable
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a=a+b;
b=a-b;
a=a-b;

by executing the above code will also swap the variables

Answer 2

interchanging like i have done put the value of b in a and vice versa

Answer 3

swapping means interchanging the values of 2 variable
eg:
int a=1,b=2,temp;
a=temp;
b=a;
a=temp;
The above code will swap the values in a and b
then the value a will be 2 and b will be 1

Answer 4

it is generally used when we need temporary variables like for swapping two numbers.
temp=a;
a=b;
b=temp;

Answer 5

swapping means