The predefined object clog is an instance of ostream class. The clog object is said to be attached to the standard error device, which is also a display screen but the object clog is buffered. This means that each insertion to clog could cause its output to be held in a buffer until the buffer is filled or until the buffer is flushed.The clog is also used in conjunction with the stream insertion operator as shown in the following example.#include <iostream> using namespace std; int main( ){ char str[] = "Unable to read...."; clog << "Error message : " << str << endl;}When the above code is compiled and executed, it produces following result:Error message : Unable to read....You would not be able to see any difference in cout, cerr and clog with these small examples, but while writing and executing big programs then difference becomes obvious. So this is good practice to display error messages using cerr stream and while displaying other log messages then clog should be used. C++
Topic: I/o operations
standard log stream (clog) in i/o ?
Browse random answers:
What are Basic Input/Output ?
How to write c++ program to write a message to the screen?
Why do we need to close a file.Eg.ifstream ifile;ifile.open("temp.dat").....ifile.close();What happens if we do not close() a file?
Can we make any program in c++ without using any header file and what is the shortest program in c++.?
Bitwise Operations - Given inputs X, Y, Z and operations | and & (meaning bitwise OR and AND, respectively), what is output equal to in?
What is the output of printf ("%d")
What will be output of the following code ?#includeusing namespace std;class abc{public :void main(){cout<<" Its main function "< }};int main(int c, char **v){abc a;if(c<1){cout<<" Error can not accept it "< exit(1);}cout<<" its in main program "< a.main();return 0;}
Write a C++ program that uses a loop to sum ten numbers read from the standard input, and then writes the sum to the standard output ?
How to write a code for replacing a character with astrick sign?
Explain about File I/O ?
Input output fuction in c plus plus?
How do you write a program which produces its own source code as its output?
Is it possible to have different access modifiers on the get/set methods of a property?
Explainabout Standard input and output ?
I was creating a program that has a 2 dimensional array with 25 elements.How can I display the highest row sum?lowest row sum?highest col sum?lowest row sum?
HOW TO READ TEXT FILE AND READ IT INTO ANOTHER TEXT FILE?
Write a C++ program that includes two functions ?
What are the different formats specifiers available for input and output statements ?
Explain about Standard Output (cout) ?
Explain about Input/Output with files ?
How to Open a file in input and output ?
How to Closing a file in i/o ?
How to Text files in i/o ?
How to Checking state flags in i/o ?
How to get and put stream pointers in i/o ?
Explain about Binary files in i/o ?
What are Header files i/o ?
How to getting a stream in i/o ?
How to Passing streams to functions in i/o ?
What are Item by item input and output ?
What are Other input operations ?
What are Repositioning and error states in i/o ?
What are standard error stream in i/o ?
standard log stream (clog) in i/o ?
How to Formatted Input/Output ?
Explain about cstdio (stdio.h) ?
Write a Text File in i/o ?
How to Monitor File System Changes in i/o ?
Explain about extending the I/O System
How to Enumerate Files in a Directory in i/o ?
What are I/O Modes ?
