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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()
sqrt(x as int) in Math Library Functions of Programming in CPP
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Usage 
The sqrt function is used to return square root of the given value.
Syntax 
sqrt(number);
Example
#include <stdio.h>      
#include <math.h>      

int main ()
{

  printf ("sqrt(49)= %f\n", sqrt (49) );
  return 0;
}
Output 
sqrt(49)=7
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