# 4.4.2: Literals and Constants - Floating Point

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## Floating-Point Literals

These are used to represent and store real numbers. The real number has an integer part, real part, fractional part and an exponential part. The floating-point literals can be stored either in decimal form or exponential form. While representing the floating-point decimals one must keep two things in mind to produce valid literals:

• In the decimal form, one must include the decimal point, exponent part or both, otherwise, it will lead to an error.
• In the exponential form, one must include the integer part, fractional part or both, otherwise, it will lead to an error.

Few floating-point literal representations are shown below:

Valid Floating Literals:

10.125
1.215-10L
10.5E-3


Invalid Floating Literals:

123E
1250f
0.e879


Example:

#include <iostream>
using namespace std;

int main()
{   // Real literal
const float floatVal = 4.14;

cout << "Floating-point literal: " << floatVal << "\n";
return 0;
}  

Output:

Floating point literal: 4.14


This page titled 4.4.2: Literals and Constants - Floating Point is shared under a CC BY-SA license and was authored, remixed, and/or curated by Patrick McClanahan.