कॉम्पिटेटिव प्रोग्रामिंग कोर्स एपिसोड 5

C++ Basics Part 4: Strings & getline Function

Introduction

• Lecture on C++ Basics Part 4
• Topics covered:
  • C++ Strings
  • getline function

C++ Strings

• Strings in C++ are a sequence of characters
• Useful for competitive programming

Basic Operations

• Declaration and Initialization:

  string str = "Hello";
  

• Strings allow multiple character management compared to char type
• Concatenation:

  string str1 = "Hello";
  string str2 = "World";
  string result = str1 + " " + str2; // Concatenates with a space
  

getline Function

• Used for reading a full line of text input
• Syntax: getline(cin, str);

Example

  string line;
  getline(cin, line);
  cout << line << endl;

Important Points

• getline reads inputs including spaces until a newline character is encountered
• Use ignore() to avoid issues with leftover newline characters in the input buffer

Practical Applications

• String Manipulation Challenges
• Handling large numbers in competitive programming using strings

Summary

• Strings and getline are essential tools in C++ for handling text and advanced input/output operations.