VELCAN ENERGY Embedded Software Engineer Interview Questions and Answers

Jk and technical programming questions

Q1. C programming, Embedded C ,C++, Paytho, Linux
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Q2. What is static, global,local variables?
Ans. 
Static, global, and local variables are different types of variables in programming with different scopes and lifetimes.
• Static variables have a fixed memory location and retain their value between function calls.

• Global variables are accessible throughout the entire program.

• Local variables are only accessible within the block of code where they are declared.
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Q3. Difference between Call by reference and call by value
Ans. 
Call by value passes a copy of the variable, while call by reference passes the actual variable itself.
• Call by value passes a copy of the variable, so changes made to the parameter inside the function do not affect the original variable.

• Call by reference passes the actual variable itself, so changes made to the parameter inside the function affect the original variable.

• In call by value, the function receives a copy of ...read more
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Q4. Explain storage classes concept in depth?
Ans. 
Storage classes in C define the scope and lifetime of variables.
• Storage classes include auto, register, static, extern, and typedef.

• Auto variables are local to the block and have automatic storage duration.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared outside any function and can be accessed by other files.

• Typede
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Q1. Join the company for further process
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