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Tip: Using Cin.ignore() and Cin.get() Functions

Learn how to not leave a terminating character in the stream.


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Because cin can leave a terminating character in the stream, not using the cin.ignore() and cin.get() functions could cause small problems with your code. The user gets to see what is being written to the screen after they enter the values, as it can be seen here:

#include 
using namespace std;

int main () {
   
   int a,b,max;
   
   cout  a; 
   cout  b; 
   
   //remove the terminating character
   std::cin.ignore();
 
   if( ab ) {max=a;}
        else {max=b;}
   
   cout   
   //Extracts characters from the stream
   std::cin.get();
   return 0;
} 

 



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Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
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