41 lines
1.2 KiB
Markdown
41 lines
1.2 KiB
Markdown
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---
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title: Input and Output
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---
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## Input and Output
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* Input stream objects in C++ use 'cin'. This is used to save input data into the program.
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* Output stream objects use 'cout', as shown in the first introduction of C++, to print out statements to the console.
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```cpp
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#include <iostream>
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using namespace std;
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int main()
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{
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int x;
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cout << "Enter a number: " << endl; // Ask user for input
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cin >> x; // Take user input
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cout << "The output value of int x: " << x << endl;
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return 0;
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}
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```
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* The header file `<iostream>` is required for stream objects.
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* After declaring a variable, using the `cin` object, input data can be saved into the variable.
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* The `cout` object prints the data saved into the variable to the console.
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The operators `<<` and `>>` are used to point in the direction of the data.
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* For `cin`, the `>>` operator is used. You can visualize the input data flowing into the variable.
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* For `cout`, the `<<` operator is used. You can visualize data from a string or variable flowing into the `cout` object.
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Try the code <a href="https://repl.it/ND8q/1" target='_blank' rel='nofollow'>here</a> .
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**Happy Coding ! :)**
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**Feel free to ask any queries on FreeCodeCamp's GitHub page or [FreeCodeCamp's Forum .](https://forum.freecodecamp.org/)**
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