3 Fe ¥) Write a reverse integer function that takes an integer num as a reference parameter and then reverse num's order after executing the function. Function prototype is: void revinteger( ints num ); If a user calls this function as: int x = 12345; int y - -5678; revinteger ( x ) ; revinteger( y ); cout « x << endl; cout << y << endl; Then the first cout will output 54321, and the second cout will output –876

3 Fe ¥) Write a reverse integer function that takes an integer num as a reference parameter and then reverse num's order after executing the function. Function prototype is: void revinteger( ints num ); If a user calls this function as: int x = 12345; int y - -5678; revinteger ( x ) ; revinteger( y ); cout « x << endl; cout << y << endl; Then the first cout will output 54321, and the second cout will output –876

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 19PE

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Mark the following statements as true or false: a. To use a predefined function in a program, you need to know only the name of the function and how to use it. (1) b. A value-returning function returns only one value. (2, 3) c. Parameters allow you to use different values each time the function is called. (2, 7, 9) d. When a return statement executes in a user-defined function, the function immediately exits. (3, 4) e. A value-returning function returns only integer values. (4) f. A variable name cannot be passed to a value parameter. (3, 6) g. If a C++ function does not use parameters, parentheses around the empty parameter list are still required. (2, 3, 6) h. In C + + , the names of the corresponding formal and actual parameters must be the same. (3, 4, 6) i. A function that changes the value of a reference parameter also changes the value of the actual parameter. (7) j. Whenever the value of a reference parameter changes, the value of the actual parameter changes. (7) k. In C++, function definitions can be nested; that is, the definition of one function can be enclosed in the body of another function. (9) l. Using global variables in a program is a better programming style than using local variables, because extra variables can be avoided. (10) m. In a program, global constants are as dangerous as global variables. (10) n. The memory for a static variable remains allocated between function calls. (11)
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