In scientific notation, numbers are represented as decimal numbers times powers of 10.

Introduction

Here are some examples.

Number	Exponential Notation
1,000,000,000	1.0e9
123,000	1.23e5
322.56	3.2256e2
0.000056	5.6e-5

The following code displays float value in two ways.

Demo Code

#include <stdio.h>
int main(void)
{
    float aboat = 32000.0;
    double abet = 2.14e9;
    long double dip = 5.32e-5;
    //  w  w w. j ava  2s.  c  o m
    printf("%f can be written %e\n", aboat, aboat);

    printf("And it's %a in hexadecimal, powers of 2 notation\n", aboat);
    printf("%f can be written %e\n", abet, abet);
    printf("%Lf can be written %Le\n", dip, dip);
    
    return 0;
}

In scientific notation, numbers are represented as decimal numbers times powers of 10. - C Data Type

Introduction

Demo Code

Result

Related Tutorials