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What are the features of the C language? Programs Written in C are efficient and fast. This is due to its variety of data type and powerful operators. C language is the most widely used language in operating systems and embedded system development today. Structured programming language Machine Independent or Portable What is recursion in C? When a function calls itself and this process is known as recursion. The function that calls itself is known as a recursive function. 4) What is the usage of the pointer in C? Accessing array elements, Dynamic memory allocation, Call by Reference and Data Structures like a tree, graph, linked list, etc 5) What is an auto keyword in C? In C, every local variable of a function is known as an automatic (auto) variable. Variables which are declared inside the function block are known as a local variable. The local variables are also known as an auto variable. It is optional to use an auto keyword before the data type of a variable. If no value is stored in the local variable, then it consists of a garbage value. Know more about other keywords in C. 6) What is the maximum length of an identifier? It is 32 characters ideally but implementation specific. 7) What is an infinite loop? A loop running continuously for an indefinite number of times is called the infinite loop. 8) What functions are used for dynamic memory allocation in C language? malloc(), calloc(), realloc(), free() 9) Can we compile a program without main () function? Yes, we can compile, but it can’t be executed.
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Assistant Software Engineer (ASE)

Interviewed at Accenture

3.7★
Jun 9, 2021

What are the features of the C language? Programs Written in C are efficient and fast. This is due to its variety of data type and powerful operators. C language is the most widely used language in operating systems and embedded system development today. Structured programming language Machine Independent or Portable What is recursion in C? When a function calls itself and this process is known as recursion. The function that calls itself is known as a recursive function. 4) What is the usage of the pointer in C? Accessing array elements, Dynamic memory allocation, Call by Reference and Data Structures like a tree, graph, linked list, etc 5) What is an auto keyword in C? In C, every local variable of a function is known as an automatic (auto) variable. Variables which are declared inside the function block are known as a local variable. The local variables are also known as an auto variable. It is optional to use an auto keyword before the data type of a variable. If no value is stored in the local variable, then it consists of a garbage value. Know more about other keywords in C. 6) What is the maximum length of an identifier? It is 32 characters ideally but implementation specific. 7) What is an infinite loop? A loop running continuously for an indefinite number of times is called the infinite loop. 8) What functions are used for dynamic memory allocation in C language? malloc(), calloc(), realloc(), free() 9) Can we compile a program without main () function? Yes, we can compile, but it can’t be executed.

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