How to update all the rows of table using stored procedures

Question

Hi,
I want to update all the rows of a table of a specific column
sp_a  male
sp_b female
sp_c  male
sp_d female
in above table 
gender of all the columns has to be interchanged.

Answer 1

Sir table is like this detail(name varchar(10),gender varchar(10))
Where Details  are like this 
Name  Gender
sp_a 
male
sp_b
female
sp_c 
male
sp_d
female
I want to create a stored procedure which automtically updates gender from male to female and female to male
for all the rows . i.e., all the rows are updated for column gender by just running a stored procedure.
So after execution of stored proc the above table looks
Name  Gender
sp_a 
female
sp_b
male
sp_c 
female
sp_d
male