c:math.h:sqrt

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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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