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c:math.h:sqrt

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c:math.h:sqrt [2013/01/22 22:02] (current)
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 +{{keywords>wiki library source code example reference}}
 +===== sqrt =====
 +<code c>
 +    double sqrt(double);
 +</code>
  
 +returns the square root
 +
 +===== C Sourcecode Example =====
 +compile in linux with: gcc sqrt.c -o sqrt **-lm** -Wall
 +
 +<code c>     
 +#include <stdio.h> /* including standard library */
 +//#include <windows.h> /* uncomment this for Windows */
 +
 +#include <math.h> /* including math library */
 +
 +int main ( void )
 +{
 +  printf ("square root from 4.2 is %f\n", sqrt (4.2) );
 +  return 0;
 +}
 +</code>
 +
 +==== output ====
 +   output:
 +   user@host:~$ ./sqrt 
 +   square root from 4.2 is 2.049390
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c/math.h/sqrt.txt · Last modified: 2013/01/22 22:02 (external edit)

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