C Interview Questions

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C Interview Questions

[{"selector":"#anim-eb25afa8-0c21-4c6b-9331-d953f034a1af [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b1ab8dd7-e3e4-4015-b7a9-6c9905fc2c6e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5fdc8e4a-8f48-404e-86c5-3761f0db18ed","keyframes":{"transform":["translate3d(0px, 794.37882%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-daf6f39b-39ec-4af1-a354-9b4e9e8b5225","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cefd77c2-1864-40a5-8a97-7e761f3bc5ef","keyframes":{"transform":["translate3d(0px, 124.34322%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] As one of the oldest and most influential programming languages, C remains a staple of the software development industry. Whether you are an experienced C programmer or a budding enthusiast, it is important to be well prepared for C interview questions.

C Interview Questions

[{"selector":"#anim-09866e8a-4acd-411a-aaf6-59277bdfe5c0 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-7d06337a-b8e7-4332-b866-b91798a9b39b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8b34567d-3b7b-4db0-8029-9e61d8cda267","keyframes":{"transform":["translate3d(0px, 794.37882%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c382084c-6122-4307-ad79-0a39c6bc61de","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-231c74be-0f68-464f-81df-248fce8e6908","keyframes":{"transform":["translate3d(0px, 124.34322%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] We've selected a collection of interesting C interview questions that will test your knowledge. From understanding pointers and memory management to mastering control structures and data types, we will take you on an intellectual journey.

1. Why is C called a mid-level programming language?

[{"selector":"#anim-cee4fbdc-236a-483b-ad02-2367e218bd20 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-6522b76a-5941-47ce-94b7-644a9ef69fde","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9b3fc917-b1ff-4a80-99f1-fc9c37d7b9e7","keyframes":{"transform":["translate3d(0px, 233.80115%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

2. What are the features of the C language?

[{"selector":"#anim-bb95f032-64e7-425b-af00-8e5740cb47af [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3190ff2b-1d41-4b73-8778-00752f3b527b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0714dd1a-fad1-4779-95c4-7d9af57f7981","keyframes":{"transform":["translate3d(0px, 286.59494%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

3. What is a token?

[{"selector":"#anim-8c7b8372-4cd1-4fd8-89d2-7429a3e79f7e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-e2d9a66b-1e7c-44c7-ac56-a86782102528","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c5985f30-4f05-46b3-99a8-a214b757a5c6","keyframes":{"transform":["translate3d(0px, 522.61421%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

4. What is the use of printf() and scanf() functions? Also explain format specifiers?

[{"selector":"#anim-a1c5cb6c-fb98-45f2-a81a-fad73c94ccb8 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-0ea92078-09c2-4ce9-8f7a-5b4716e8dabe","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-91fbe857-e820-49da-a892-c03c7b6372d4","keyframes":{"transform":["translate3d(0px, 197.43209%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

5. What's the value of the expression 5["abxdef"]?

[{"selector":"#anim-85074fb8-3108-4330-9e39-056b399fe594 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-a89d767b-602f-478c-840c-483f23828ddd","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7d57a7e6-cff0-440b-8097-65a8aee870fb","keyframes":{"transform":["translate3d(0px, 286.59494%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

6. What is a built-in function in C?

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[{"selector":"#anim-28ca25e2-adce-4e9b-a078-3507052a3821","keyframes":{"opacity":[0,1]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f4625685-5b53-4532-b71b-3f11f5490b44","keyframes":{"transform":["translate3d(-126.33136%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cef9a3de-300b-4fc9-9391-a1ea90f88ff3","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-58f2126e-9527-474a-812b-85505e3682df","keyframes":{"transform":["translate3d(-120.51283%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-77b00a44-0bf2-4daa-a200-a25e928cf47f","keyframes":{"opacity":[0,1]},"delay":200,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cc2890f0-9893-4bec-9b39-6bb69647ccaa","keyframes":{"opacity":[0,1]},"delay":300,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-86fce230-849a-4acb-b3e2-1eec7733a95d","keyframes":{"opacity":[0,1]},"delay":400,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b4b583e7-3d0c-4a65-add3-4bfc5d2b5ca4","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-55a2f571-f7f6-4173-a25d-bccd3c7afada","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-eafe3510-8755-4754-8f13-3dd037ffe86f","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Learn more

7. What is a Preprocessor?

[{"selector":"#anim-b8483dc3-5414-4e09-873a-d1c0ff82bf32 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3cdd7b89-ca0b-4a96-a80e-3a29b3b0dd3c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c576de8f-f79d-4edf-9fbf-1b87fa452ca1","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

8. In C, What is the #line used for?

[{"selector":"#anim-a947f249-0089-433d-bd97-dbbf385af3e9 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-04fba294-e710-4aea-8421-12fe4fb0da3a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-445d8b7d-6458-4c58-82cb-de8e4ad3636a","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

9. How can a string be converted to a number?

[{"selector":"#anim-2d848230-0e71-4460-8a87-773d31ea417e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-84cf0506-aefa-49cf-aa7a-ca525e3841f0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b4278970-6b0e-4d41-a0c9-41b43d3f3acb","keyframes":{"transform":["translate3d(0px, 286.59494%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

10. How can a number be converted to a string?

[{"selector":"#anim-238fdb8e-f833-4004-98a7-520d283e9ee2 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b562a109-17b6-472b-8afd-474152c3d23a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f8797682-8486-46f0-af89-606cacf74a27","keyframes":{"transform":["translate3d(0px, 286.59494%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

11. What is recursion in C?

[{"selector":"#anim-14c19ad0-227d-47c9-8fba-2b5619222d5a [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-bae90f04-4547-4340-bebb-9a3d90eaf10c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1a28076c-ea31-44a3-a1bc-1d57cec8d987","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

12. Why doesn’t C support function overloading?

[{"selector":"#anim-c8455579-9a23-45a2-b0e2-b4e90b64ada5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-586eb565-bf93-4700-bdf8-414c21f02473","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-75a4ef48-52f3-4d38-a304-6f1d50b64d9f","keyframes":{"transform":["translate3d(0px, 286.59494%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

13. What is the difference between global int and static int declaration?

[{"selector":"#anim-ecf0f84c-5a9b-47f8-8204-5ff0998dddee [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-f264204e-3cb9-40cc-9e43-4719407c963a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f217a3c8-d250-4c55-b1c9-01f0941f540a","keyframes":{"transform":["translate3d(0px, 233.80115%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

14. What is a pointer in C?

[{"selector":"#anim-0c5b5f7f-202b-46f3-88c0-781f559ee3ae [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-62bf44fc-7e18-42b1-b6be-816491fcfad0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d8ff57b6-9945-49d6-ae7b-2e8960014e59","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

15. Difference between const char* p and char const* p?

[{"selector":"#anim-1dd79d94-4413-4ab3-a946-603c4f54ec33 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-ebe282ba-97d0-4560-b011-755a55fc40a7","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0192f445-7d95-4631-a051-d8f51138cc09","keyframes":{"transform":["translate3d(0px, 233.80115%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

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[{"selector":"#anim-188bc4f6-2ff2-406b-bccd-cc6ee84aa132","keyframes":{"opacity":[0,1]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-75631d69-73f2-4258-8f2b-f20b8e1091c9","keyframes":{"transform":["translate3d(-126.33136%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2f058b89-edcf-41f6-b739-571fe51fb2d1","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d9db0493-2246-4126-b275-702aee498465","keyframes":{"transform":["translate3d(-120.51283%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a34df452-284b-4fcd-b4b9-4cc19a0b8606","keyframes":{"opacity":[0,1]},"delay":200,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-84c384d7-8f7f-424e-abf3-8f0d90322e35","keyframes":{"opacity":[0,1]},"delay":300,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8d3b0347-f660-4763-8a72-6326eee59320","keyframes":{"opacity":[0,1]},"delay":400,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f037c177-e8bc-4884-bb5a-55a2fa645b08","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ac501ba6-3852-48fe-848a-82cf0ab68508","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0922c9f0-6d4b-40d0-98d6-b955c0f45dd5","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Learn more

16. What is pointer to pointer in C?

[{"selector":"#anim-c2cbf7ca-142c-4749-9786-3f13341c4a96 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-f0ac8c78-3627-4398-b6aa-e8495396538c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c20b303b-6f3d-4158-a079-6413ca60018e","keyframes":{"transform":["translate3d(0px, 373.29606%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

17. Why n++ executes faster than n+1 ?

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18. What is typecasting in C?

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19. What are the advantages of Macro over function?

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20. What are Enumerations?

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21. When should we use the register storage specifier?

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C Interview Questions

C Interview Questions

C Interview Questions

1. Why is C called a mid-level programming language?

2. What are the features of the C language?

3. What is a token?

4. What is the use of printf() and scanf() functions? Also explain format specifiers?

5. What's the value of the expression 5["abxdef"]?

6. What is a built-in function in C?

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7. What is a Preprocessor?

8. In C, What is the #line used for?

9. How can a string be converted to a number?

10. How can a number be converted to a string?

11. What is recursion in C?

12. Why doesn’t C support function overloading?

13. What is the difference between global int and static int declaration?

14. What is a pointer in C?

15. Difference between const char* p and char const* p?

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16. What is pointer to pointer in C?

17. Why n++ executes faster than n+1 ?

18. What is typecasting in C?

19. What are the advantages of Macro over function?

20. What are Enumerations?

21. When should we use the register storage specifier?

More

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10 New Job Fields for Women in 2022

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