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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.
Define the Relational Operator in c language? The Relational operators refer to the relationships that values can have with one another and they are used to compare two operand
How can I learn all programming languages.?
how to create a shopping cart and sibmit the code segment on screan
When declaring a variable of data type pointer, use the * in front of the variable name. These variables hold a memory location (like B45CDF), not an actual value like 30 or A:
depth description of the inside and outside typecasting
Write a C++ program that calculates the area of a circle, rectangle and square using overloaded versions of a function area ().Your program should include both declarations and def
A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the asci
Hi I''m trying to connect to CISCO router using termios. So I decided to have two threads one for reading data and the other one for writing data. The problem is that I have to add
Is there any difficulty with the following : char*a=NULL; char& p = *a;? A: The result is indeterminate. You must never do this. A reference has to always refer to some object.
how can i make a program with !(not) operator
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