Basic Input / Output ( I/O ) in C++

C++ comes with libraries which helps  us in performing  input/output.

In C++ Sequence of bytes corresponding to input and output are commonly known as "STREAM"

Input Stream - Direction of flow of bytes takes place from device to main memory. and cin is a predefined variable that reads data from the keyboard with the extraction operator (>>).

Output Stream- Direction of flow of bytes take place from main memory to device. and cout is predefined varible that displays data with insertion operator (<<).

 

  A Simple Input/output program and add two numbers:

 #include<iostream>  
 using namespace std;  
 int main()  
 {  
  int num1,num2;  
  cout<<"Enter num1 value:"<<endl;  
  cin>>num1;  
  cout<<"Enter num2 value:"<<endl;  
  cin>>num2;  
  cout<<"Sum of num1 and num2 is:"<<num1+num2<<endl;  
  return 0;  
 }  
 Output:  
 Enter num1 value: 10  
 Enter num2 value: 20  
 Sum of num1 and num2 is: 30  

AUTHOR : Rakshit Joshi [ Linkedin Profile ]

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