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Introduction
What is CPP Declarning Variable Type casting Symbolic constants
User-defined Functions
Function prototype Call by Reference Return by Reference Default Arguments
Math Library Functions
ceil(x as float) floor(x as float) fabs(x as float) pow(x as int,y as int) sqrt(x as int) exp(x as int) log(x as float)
Math Library Functions [cont'd]
log10(x as float) sin(x as float) cos(x as float) tan(x as float)
Classes and Objects in CPP
What is Class Structure of Class What is Object
String Class in CPP
append() assign() at() begin() capacity()
append() in String Class in CPP of Programming in CPP
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Usage 
The append function is used to add extra string to end of the statement.
Syntax 
str.append(string);
Example
#include <iostream>

int main ()
{
  std::string str;

  str.append("welcome");                      
  str.append("to");                  
  str.append("CPP");         
  std::cout << str << '\n';
  return 0;
}
Output 
welcome to CPP
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User-defined Functions of Programming in CPP
Introduction of Programming in CPP
Math Library Functions of Programming in CPP
String Class in CPP of Programming in CPP
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