C log10() function

C log10() function - Base 10 logarithm

Syntax:

double log10(double x)

The log10() function is used to calculate the base 10 logarithm of x.

Parameters:

Return value from log10()

• Returns the computed value.

Example: log10() function

The following example calculates the base 10 logarithm of 100.0 and 1000.0.

#include <math.h>
#include <stdio.h>
 
int main(void)
{
   double x = 100.0, y; 
   y = log10(x); 
   printf("The base 10 logarithm of %lf is %lf\n", x, y);
   x = 1000.0; 
   y = log10(x); 
   printf("\nThe base 10 logarithm of %lf is %lf\n", x, y);
}
 

Output:

The base 10 logarithm of 100.000000 is 2.000000

The base 10 logarithm of 1000.000000 is 3.000000

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