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It is standard on functions to provide some indication that the function has succeeded in its operation. Consider the Scanf function:
scanf("%d",&number1); If the function does indeed get a integer from the keyboard then everything is okay, but what happens if the user types in a char or float etc. The program might crash, it is common to write functions which never crash but return an error code. On the function scanf, the full prototype is
int scanf("format",&variables); The int is used to provide details of correct operation i.e. number of values input or '-1' error . We can use this in programs to trap errors and repeat functions etc. The appended ANSI library shows full prototypes and meaning of return values from functions.
example of friend
A: It allows a program to reference an identifier in global scope which has been hidden by another identifier along with the same name in the local scope.
It is a class defined in the scope of a function _ any function, whether a member functions or a free function. For instance: // Example : Local class // int f() { c
Constructors and Destructors: A Class is defined as constructor by declaring a constructor in the form of function inside the class. In other word a function in the name of
Design and implement a library system that does the following: ? Takes details of a student/library users: first name, last name, other names, user ID number, and nationality. Th
Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve betw
Operator overloading - c++ program: Write a program in c to define operator overloading. class matrix{ private : int x[2][2];
A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome
Stack operations - C++: Write a program to define basic stack operations in c++. int Stack::push(int elem) { int m = getmax(); if (top { put_
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