Function decode(comm, null, 0, comm) is the same asA) NVL(comm, 0)B) decode(comm, comm, comm, 0)C) update emp set comm = 0 where comm is null;D) update comm = 0 when comm is null
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Function decode(comm, null, 0, comm) is the same as
A) NVL(comm, 0)
B) decode(comm, comm, comm, 0)
C) update emp set comm = 0 where comm is null;
D) update comm = 0 when comm is null
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- 1. Given a global list of users and password like the following, write a function (called login) that takes a user name and password and logs in the user if login is successful:- the user exists in the list- and the password is correct The function should return a True/False users = {'Jane': 'Password123@', 'John': 'Password123!'} 2. Write a function called register that takes a user name and password and adds the user to the list if the user does not already exist in the listThe function should return a True/False Put it all together: 3. Write a showmenu function that shows the following options and reads the choice from user and returns it: 1: register 2: login 0: logout 3. In the main section, based on the user's selected option, ask the required input (user name, passwords) and perform the requested operation. 4. Repeat the above until the user enters 0. (keep showing the menu that asks for another option)Write in C Language Description Please finish the function replace and function replaceAll. char *replace(char *source, char *pattern, char *replacement); char *replaceAll(char *source, char *pattern, char *replacement); Function replace will find the first appear pattern in source and replace it withreplacement. Function replaceAll will find all pattern in source and replace it with replacement. function char *replace(char *source, char *pattern, char *replacement){}char *replaceAll(char *source, char *pattern, char *replacement){}TRUE OR FALSE // C PROGRAMMING LANGUAGE When an array is passed to a function, only the address of the array is passed to the function
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