# double or floating point number in scientific notation and floating point

## Double or floating point number in scientific notation and floating point :-

Here in this article we are going to print a double number in scientific as well as fixed notation . There is a keyword

**fixed**. By using this keyword we can easily print a number in**fixed notation**and for the**scientific**notation we can use**scientific keyword**. These are predefined keywords which are defined in**iostream library file**. We can also fix the number after point (.) in the**fixed notation**. for this we can use**precision(x)**,here value of x denote how many numbers we want after point .

__example :-__#include <iostream> #include <cstdio> using namespace std; int main() { double a=123.4589; double b=1.0e6; double c=1256.32; // fixed notation cout<<"The fixed notation of the numbers are"<<endl; cout<<fixed<<a<<" "<<b<<" "<<c<<endl; // scientific notation cout<<"The scientific notation of the numbers are"<<endl; cout<<scientific<<a<<" "<<b<<" "<<c<<endl; // fix numbers after dot (.) // let's we want only 2 numbers // after dot(.) cout.precision(2); cout<<"The numbers are"<<endl; cout<<fixed<<a<<" "<<b<<" "<<c<<endl; return 0; }

__output:-__

The fixed notation of the numbers are 123.458900 1000000.000000 1256.320000 The scientific notation of the numbers are 1.234589e+02 1.000000e+06 1.256320e+03 The numbers are 123.46 1000000.00 1256.32

double or floating point number in scientific notation and floating point

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