log10

#include <stdio.h>
#include <math.h>
 
int main()
{
  double n, result;
 
  printf("Enter a number to calculate it's log(base is 10)\n");
  scanf("%lf", &n);
 
  result = log10(n);
 
  printf("Common log of %.2lf = %.2lf\n", n, result);
 
  return 0;
}