If each input item is surrounded by whitespace (blanks, tabs, newlines), the items can be read easily using the extraction operator >>.int myinteger; // declarationsfloat myfloat;char mychar;string mystring;fp_in >> myinteger; // input from file pointer or standard inputcin >> myfloat;fp_in >> mychar;cin >> mystring;The extraction operator works for numbers (ints, floats), characters (char), and strings (declared as arrays of type char or pointers to type char).The extraction operator returns a zero value if it encounters a problem (typically, the end of the file). Therefore, it can be used as the test in an if statement or a while loop.Numbers, characters, and strings can be written to a file, standard output, or the standard error using the insertion operator <<.cout << "Value of myinteger " << myinteger << endl;cout << "My string is " << mystring << " plus a null character\n" << flush;To insert a line break, either insert the magic variable endl or write the end-of-line character ('\n') to the output.To make a pointer print out as a pointer, not as whatever type of data it points to, cast it to the type (void *). To make a character print as a number, cast it to type int. Similarly, you can use a cast to convince C++ to print an integer as the corresponding character.cout << (void *)ptr; cout << (int)ch; cout << (char)ival; C++
Topic: I/o operations
What are Item by item input and output ?
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 ?
