How to express ln in c language

In C language, the natural logarithm is expressed as log, and the syntax is log(double x), which returns the natural logarithm of a positive real number x with e as the base.

Representation of ln in C language

In C language, the natural logarithm of ln is expressed as log, instead of ln.

log function is the natural logarithm function with e as the base. Its syntax is:

<code class="c">double log(double x);</code>

where:

• x is the positive natural logarithm to be calculated. real numbers.
• The log() function returns the natural logarithm of x.

Example:

<code class="c">#include <stdio.h>
#include <math.h>

int main() {
    double x = 2.71828;
    double result = log(x);
    printf("ln(%f) = %f\n", x, result);
    return 0;
}</code>

Output:

<code>ln(2.718280) = 1.000000</code>

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