log10 : log10 « math.h « C Tutorial

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C Tutorial » math.h » log10

19.46.1.log10

Item	Value
Header file	math.h
Declaration	float log10f(float num); double log10(double num); long double log10l(long double num);
Return	returns the base 10 logarithm for num.

#include <math.h>

  #include <stdio.h>



  int main(void)

  {

    double val = 1.0;



    do {

      printf("%f %f\n", val, log10(val));

      val++;

    } while (val<11.0);



    return 0;

  }

1.000000 0.000000
2.000000 0.301030
3.000000 0.477121
4.000000 0.602060
5.000000 0.698970
6.000000 0.778151
7.000000 0.845098
8.000000 0.903090
9.000000 0.954243
10.000000 1.000000

19.46.log10
	19.46.1.	log10

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