Can i pass a variable in mysql_query in c program?

Can i pass a varible in mysql_query
in c coding .
i am using this one code but it is not successful to compile


String query,acctnbr,amount;

accntnbr = [(whatever the variable is)];
amount = [(whatever the variable is)];

query = "insert into tablename (acctnbr,amount) values (%s,%s)",acctnbr,amount);
mysql_query(&mysql,query);


what would be the right method to pass a varible in mysql_query?
thanks.