#description In num.c, the sum is calculated as sum = num1 + num3;, but the variable num3 is not defined or initialized anywhere . This will result in a compilation error and undefined behavior.

#why it this issue must be fixed

It needs to be fixed to ensure program efficiency and remove compilation errors.

#Steps to Reproduce:

-Compile num.c. -Observe the compilation error indicating 'num3' is undeclared. -failed code execution

#Additional info

Fixing this will allow the program to compile and function as intended.

title Undefined variable 'num3' used ( in num.c file )

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for issue

modified variables and logic of calculation 1.What is the type of the Pull request:

/kind Enhancement

2.what does this Pull request do : It will calculate the sum of variables 'a' and 'b' in the code and assign the values to "sum"

Which issue will it fix: Invalid Datatype and wrong calculation logic

4..Test report added: /kind not tested

5.test report: No test report link since the code is not tested.