Judgment statements in the 19:python

19.1 to find the area of a triangle

Problem Description:

give the three sides of the triangle, and ask for its area.

Tips:

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the open root function of Python is sqrt.

you need to judge the triangular three-side relationship,a+b>c, that is, the sum of any two sides is greater than the third side.

19.2experimental results under command:

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19.3 PythonThe program is implemented as follows:

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19.4How to add a triangle three side of the illegal judgment

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An unlawful judgment:

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After the program is changed

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19.5 pythonConditional Statement Summary

Python A conditional statement is a result of execution of one or more statements ( True or False ) to determine the code block to execute.

you can easily understand the execution of conditional statements by :

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PythonProgram language Specifies any non-0and non-null (NULL) value istrue,0orNULLto befalse.

Python in programming if statements are used for the execution of control programs in the following basic form:

if Judging Condition:

EXECUTE statement ...

Else :

EXECUTE statement ...

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Judgment statements in the 19:python