How to Use the cin >> *num3; Statement in C++ - Comprehensive Guide

In this article, we’ll provide a comprehensive guide on how to use the cin >> *num3; statement in C++.

What is Cin >> *Num3;

In C++, the cin >> *num3; statement is used to read three numbers from the standard input. The numbers must be separated by whitespace. Its syntax can be seen as:

cin >> *num3;

What is the Purpose of Cin >> *Num3;

Cin >> *num3; is used to read three values from the input line which can be assigned to variables. This statement can be used to input strings, integers and floats.

How to Use Cin >> *Num3;

To use Cin >> *num3;, you need to have a set of three variables first.

For instance,

int n1, n2, n3;

You can then use the cin statement to read three numbers from the input and store them respectively in each variable.

For instance,

cin >> n1 >> n2 >> n3;

Examples of Cin >> *Num3;

Here are some examples of how Cin >> *num3; works:

Example 1

#include <iostream>
using namespace std;
 
int main()
{
   int number1, number2, number3;
   cout << "Enter three numbers separated by whitespace: ";
   cin >> number1 >> number2 >> number3;

cout << "You entered: " << number1 << ", " << number2
     << ", " << number3 << endl;
    
   return 0;
}

Output:

Enter three numbers separated by whitespace: 4 8 10
You entered: 4, 8, 10 

Example 2

#include <iostream>
using namespace std;
 
int main()
{
   float number1, number2, number3;
   cout << "Enter three numbers separated by whitespace: ";
   cin >> number1 >> number2 >> number3;

cout << "You entered: " << number1 << ", " << number2
     << ", " << number3 << endl;
    
   return 0;
}

Output:

Enter three numbers separated by whitespace: 25.60 41.90 92.0
You entered: 25.6, 41.9, 92

FAQ

What is the syntax for cin >> *num3; ?

The syntax for Cin >> *num3; is cin >> *num3;

Is it possible to read strings, integers and floats using cin >> *num3; ?

Yes, it is possible to read strings, integers and floats using Cin >> *num3; .

What does cin >> *num3; do?

Cin >> *num3; is used to read three values from the input line which can be assigned to variables.

Does cin >> *num3; require a set of variables?

Yes, to use Cin >> *num3; , you need to have a set of three variables first.

Is there a limit to the number of values that can be read using cin >> *num3;?

Yes, cin >> *num3; is limited to three values. To read more values than three, you can use a loop.

Related Links

Understanding the Concept of Cin Object in C++ for Beginners | Simplilearn

The ‘C’ in C++ cin refers to ‘character’ and ‘in’ means ‘input’. Thus, cin means ‘character input’. The C++ cin object belongs to the istream class. Learn about the input sources it accepts and much more.

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