Series : x + x^3/3! + x^5/5! +…..+ x^n/n!
Write a C++ Program to print series using function: x + x^3/3! + x^5/5! +…..+ x^n/n!. Here’s simple C++ Program to print series using function: x + x^3/3! + x^5/5! +…..+ x^n/n! in C++ Programming Language.
What are Functions ?
Function is a block of statements that performs some operations. All C++ programs have at least one function – function called “main()”. This function is entry-point of your program.
A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.
Defining a Function : :
The general form of a C++ function definition is as follows:
return_type Function_Name( list of parameters )
{
//function’s body
}
- return_type : suggests what the function will return. It can be void, int, char, some pointer or even a class object.
- Function_Name : is the name of the function, using the function name it is called.
- Parameters : are variables to hold values of arguments passed while function is called. A function may or may not contain parameter list.
- Function body : is he part where the code statements are written.
Below is the source code for C++ Program to print series using function: x + x^3/3! + x^5/5! +…..+ x^n/n! which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* C++ Program to print series using function: x + x^3/3! + x^5/5! +.....+ x^n/n! */ #include<iostream> using namespace std; double sum(int ,int ); double res; int main() { int x,n; cout<<"\nEnter value of x :: "; cin>>x; cout<<"\nEnter value of n :: "; cin>>n; res=sum(x,n); cout<<"\nSum of series [ x + x^3/3! + x^5/5! +.....+ x^n/n!] is :: [ "<<res<<" ]\n"; return 0; } double sum(int a,int b) { long power(int,int); int i,j; double s=0,fac=1; long p; for(i=1;i<=b;i+=2) { p=power(a,i); for(j=1;j<=i;++j) { fac*=j; } s+=p/fac; fac=1; } return(s); } long power(int x,int i) { long res=1,j; for(j=1;j<=i;++j) { res*=x; } return(res); }
OUTPUT : :
/* C++ Program to print series using function: x + x^3/3! + x^5/5! +.....+ x^n/n! */ Enter value of x :: 5 Enter value of n :: 20 Sum of series [ x + x^3/3! + x^5/5! +.....+ x^n/n!] is :: [ 74.1779 ] Process returned 0
Above is the source code for C++ Program to print series using function: x + x^3/3! + x^5/5! +…..+ x^n/n! which is successfully compiled and run on Windows System.The Output of the program is shown above .
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