Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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A function that turns an argument to a string (call it "toString(...)") is a great use of function overloading. In one sentence, why might this be?
In one sentence, why should we generally verify the arguments are what we expect when writing a function?
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- Predefined functions are less efficient than those that are defined by the user.arrow_forwardQuestion 3The program below reads two integers. Then a function with the followingprototype is called: void div_rem(int a, int b, int *divides, int *remains); This function is passed the two integers. It divides them (using integer division),and writes the answer over wherever "divides" points. Then it finds theremainder and writes it into where "remains" points. Thus for 20 and 3, 20divided by 3 is 6, remainder 2. Implement the div_rem function. #include <stdio.h>void div_rem(int a, int b, int *divides, int *remains); int main(void) { int a, b; int div = 0; int rem = 0; printf("enter two integers ");scanf("%i %i", &a, &b); div_rem(a, b, &div, &rem); printf("%i divided by %i = %i " "remainder %i\n", a, b, div, rem); return 0;}arrow_forwardMatlab Programmingarrow_forward
- For each function, describe what it actually does when called with a string argument. If it does not correctly check for lowercase letters, give an example argument that produces incorrect results, and describe why the result is incorrect. # 1 def any_lowercase1(s): for c in s: if c.islower(): return True else: return False # 2 def any_lowercase2(s): for c in s: if 'c'.islower(): return 'True' else: return 'False' # 3 def any_lowercase3(s): for c in s: flag = c.islower() return flag # 4 def any_lowercase4(s): flag = False for c in s: flag = flag or c.islower() return flag # 5 def any_lowercase5(s): for c in s: if not c.islower(): return False return True The code and its output must be explained technically whenever asked. The explanation can be provided before or after the code, or in the form of code comments within...arrow_forwardQuestion 3 Formal parameters of a function are available outside the function. True False Question 4arrow_forwardPredefined functions are less efficient than those that are defined by the user.arrow_forward
- Write a function named contains-double in Scheme that takes a list as input and returns true if an item every appears twice in a row. You may assume the list is flat (i.e., no nested lists).arrow_forwardPredefined functions are less efficient than those that are defined by the user.arrow_forwardCreate the function prototype of a function called send that accepts a single String parameter called name with the argument label to. It should return a Bool value. *Note: The function prototype only provides the name, parameters, and return type of a function. You can also think of it as the function without the body (curly braces and anything inside it.)arrow_forward
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