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If you have a C language programming interview that is scheduled a few days from now, you will likely be nervous and have doubts about the adequacy of your C language programming knowledge. In order to walk away from the interview room with a smile on your face and a spring in your step, you need to know that the key to any interview is preparation. Companies will more likely hire you if they see that you are knowledgeable and skilled enough to be part of their growing team. C language programming interviews serve as a screening test to find the candidates who are worthy of their vacant position. To boost your confidence level and to refresh your knowledge about C language programming, here are some possible C interview questions and their corresponding answers: Q: What is the output of printf("%d")? A: Once the characters printf(“%d”) was written, the compiler will give a garbage value. Usually, when we input printf("%d",x), the compiler will print the x value. In the example, there is no value of x after %d. The compilers usually check the format strings and it will generate an error if it detects improper number and type of arguments such as the example above. Q: What is the difference between “printf(…)” and “sprint(…)”? A: “printf(…)” encodes the data to the standard output device while “sprint(…)” writes the data in the character array. Q: How to reduce a final size of executable? A: The final size of executable can be abridged with the use of dynamic linking for libraries. Q: What does static variable mean? A: Static variable is used to declare a function name. It also retains the value within function calls. Usually, the function is external by default and this signifies that it is visible from other files. If the static is used for global variables, we can use these variables from outside files by default. In the static global form, the variable is only limited within that file. Q: What are the different storage classes in C? A: There are three different types of C storage: allocated, automatic, and static. The memory attained from calls to realloc(), malloc(), amd alloc() automatically belongs to the allocated storage type. When a variable has block scope without static, then the specifier has automatic storage. When the variables have block scope as well as static, the specifier will have a static scope. Q: What is hashing? A: Hashing usually signifies to grind up and that’s basically what hashing is all about. The core of a hashing algorithm can be found when a hash function gets your neat data and grinds it to random looking integer. Q: What is the difference between binary modes and text? A: Streams are usually classified into two different types: binary streams and text streams. Binary streams are typically used for writing and reading binary files like word processing documents, graphics, reading the mouse input, or writing and reading to the modem. On the other hand, text streams are used for writing and reading standard text files then prints the output on the screen, or it receives the input from your keyboard. These are just a few of the possible C interview questions that might be thrown at you in your interview. So read more and refresh your knowledge before the scheduled interview, and good luck! If you want to find more about interview questions regarding C language then you must visit our website c interview questions
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