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log() - Mathematical Function
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Tutorials
Cpp
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Topic |
How is Mathematical Function "log()" used in C++?
How to find the natural logarithm value of a number?
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Explanation |
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log() is a Mathematical Function that returns the natural logarithm for the given "num". This function triggers
a domain error when the "num" is negative and a range error occurs if the "num" is zero.
Syntax to find Natural Logarithm :
float log( float num );
double log( double num );
long double log( long double num );
Example:
#include <iostream.h>
#include <cmath.h>
int main()
{
cout << "Log of 2 is:: " << log(2) << endl;
cout << "Log of 4 is:: " << log(4) << endl;
return 0;
}
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Result:
Log of 2 is:: 0.693147
Log of 4 is:: 1.38629
In the above example log() is used to find the natural logarithms of 2 and 4.
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| Note |
C++ is one of the most used programming languages in the world. Also known as "C with Classes".
Hope you enjoy this tutorial. Do send your feedback or suggestions on this C++ tutorial. This is a copyright content.
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