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C Programming

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Most Frequently Asked Questions

Top recurring IOE board exam questions for C Programming with verified mark schemes, formula notation, and recurrence frequency.

Showing 30 of 30 top repeated questions

Introduction to Computer Programming

6 Questions

#1Asked in 14 Exam Sessions[8 Marks]Introduction to Computer Programming

Explain the basic structure of a FORTRAN program. What are the fundamental data types in FORTRAN? Write a FORTRAN program to read and sort 10 integers entered by the user in ascending order.

Appeared in:2082 Shrawan2082 Baishakh2081 Bhadra2080 Bhadra2079 Bhadra2076 Chaitra2076 Ashwin2074 Ashwin2073 Shrawan2073 Chaitra2071 Chaitra2070 Ashad2069 Ashad2068 Shrawan

#2Asked in 7 Exam Sessions[4 Marks]Introduction to Computer Programming

Explain in brief the steps involved during the compilation process in C along with a suitable block diagram showing the roles of the preprocessor, compiler, assembler, and linker.

Appeared in:2081 Baishakh2080 Baishakh2078 Bhadra2076 Chaitra2076 Ashwin2073 Shrawan2071 Chaitra

#3Repeated 5 Times[6 Marks]Introduction to Computer Programming

Write a program in FORTRAN to read a positive integer from the user and check whether it is a prime number or not using a DO loop and IF condition.

Appeared in:2080 Baishakh2078 Bhadra2076 Chaitra2072 Kartik2070 Ashad

#4Repeated 2 Times[6 Marks]Introduction to Computer Programming

What is an algorithm and a flowchart? Draw a flowchart and write an algorithm to find the largest of three numbers entered by the user.

Appeared in:2081 Bhadra2079 Baishakh

#5Repeated 2 Times[6 Marks]Introduction to Computer Programming

Differentiate between compiler, interpreter, and assembler. Explain the steps of the program compilation process in C.

Appeared in:2082 Baishakh2078 Bhadra

#6Repeated 2 Times[8 Marks]Introduction to Computer Programming

Explain how Arithmetic IF and Logical IF statements work in FORTRAN. Write a FORTRAN program to find the roots of a quadratic equation $ax^2 + bx + c = 0$.

Appeared in:2081 Bhadra2082 Baishakh

Operators and Expressions

3 Questions

#1Repeated 5 Times[6 Marks]Operators and Expressions

Define precedence and associativity of operators with examples. Differentiate between formatted and unformatted input/output functions (printf/scanf vs gets/puts/getchar/putchar) in C.

Appeared in:2082 Baishakh2080 Bhadra2079 Bhadra2074 Ashwin2072 Kartik

#2Repeated 2 Times[6 Marks]Operators and Expressions

Explain formatted and unformatted I/O functions in C with examples. Differentiate between `getch()`, `getche()`, and `getchar()`.

Appeared in:2082 Baishakh2079 Bhadra

#3Repeated 2 Times[6 Marks]Operators and Expressions

Explain operator precedence and associativity in C. What is type casting? Explain implicit and explicit type casting with suitable code snippets.

Appeared in:2082 Shrawan2078 Chaitra

Control Structures

5 Questions

#1Asked in 12 Exam Sessions[4 Marks]Control Structures

Write a program in C to check whether a number entered by the user is prime or composite. Also draw a flowchart for the algorithm.

Appeared in:2082 Shrawan2082 Baishakh2081 Bhadra2081 Baishakh2080 Bhadra2078 Bhadra2076 Chaitra2076 Ashwin2074 Ashwin2073 Shrawan2071 Chaitra2068 Shrawan

#2Repeated 6 Times[4 Marks]Control Structures

Compare nested if with else if ladder structure along with their flowcharts. Write a program to determine the largest among three numbers using nested if-else.

Appeared in:2082 Shrawan2081 Baishakh2076 Chaitra2076 Ashwin2074 Ashwin2071 Chaitra

#3Repeated 5 Times[5 Marks]Control Structures

Write a program to check whether a given N-digit positive integer is an Armstrong number or not. (Hint: A number equal to the sum of its own digits each raised to the power of the number of digits, e.g. 1634 = 1^4 + 6^4 + 3^4 + 4^4).

Appeared in:2080 Baishakh2079 Bhadra2076 Ashwin2073 Chaitra2071 Chaitra

#4Repeated 2 Times[8 Marks]Control Structures

Differentiate between `while` and `do-while` loops in C. Write a program to check whether a given integer number is an Armstrong number or not.

Appeared in:2081 Bhadra2082 Shrawan

#5Repeated 2 Times[8 Marks]Control Structures

Explain the `switch-case` statement with syntax and flow diagram. Write a menu-driven C program to perform basic calculator operations (+, -, *, /) using switch-case.

Appeared in:2082 Baishakh2080 Bhadra

Array and Pointer

6 Questions

#1Asked in 9 Exam Sessions[8 Marks]Array and Pointer

Define pointer. List down the importance of pointer in C programming. Describe the relationship between 1D array and pointer with a suitable code example.

Appeared in:2082 Baishakh2081 Bhadra2080 Baishakh2078 Bhadra2076 Ashwin2074 Ashwin2071 Chaitra2070 Ashad2068 Shrawan

#2Asked in 7 Exam Sessions[8 Marks]Array and Pointer

Define 1D and 2D arrays. Write a program in C to read an m x n matrix from the user, pass it to a user-defined function, and calculate and display the transpose of the matrix.

Appeared in:2082 Baishakh2081 Baishakh2080 Baishakh2076 Ashwin2074 Ashwin2069 Ashad2068 Shrawan

#3Repeated 5 Times[4 Marks]Array and Pointer

Write a program in C to reverse a string without using any string handling library function (e.g. strrev()). Also explain how to find the length of a string without using strlen().

Appeared in:2082 Shrawan2082 Baishakh2081 Bhadra2080 Baishakh2076 Ashwin

#4Repeated 2 Times[8 Marks]Array and Pointer

Explain how a 2D array can be passed to a function. Write a C program to multiply two $3 \times 3$ matrices using user-defined functions.

Appeared in:2081 Bhadra2079 Baishakh

#5Repeated 2 Times[8 Marks]Array and Pointer

What is pointer arithmetic? Write a program in C to illustrate the concept of pointer arithmetic and swap two variables using pointers (call by reference).

Appeared in:2081 Bhadra2082 Baishakh

#6Repeated 2 Times[8 Marks]Array and Pointer

Explain dynamic memory allocation functions in C (`malloc()`, `calloc()`, `realloc()`, and `free()`). Write a program to dynamically allocate memory for $N$ integers, sort them in ascending order, and free the memory.

Appeared in:2082 Shrawan2078 Bhadra

User-defined Functions

4 Questions

#1Asked in 8 Exam Sessions[6 Marks]User-defined Functions

Write a program in C to display the nth term of a Fibonacci sequence using a recursive function. The value of n is entered by the user.

Appeared in:2082 Baishakh2081 Bhadra2079 Bhadra2076 Ashwin2074 Ashwin2072 Kartik2071 Chaitra2068 Shrawan

#2Asked in 7 Exam Sessions[4 Marks]User-defined Functions

What do you mean by 'call by value and call by reference'? Explain the differences with suitable examples and memory diagrams.

Appeared in:2082 Shrawan2081 Bhadra2080 Bhadra2076 Ashwin2070 Ashad2069 Ashad2068 Shrawan

#3Repeated 4 Times[4 Marks]User-defined Functions

Write a program to calculate the factorial of an integer entered by the user using the concept of a recursive function. Explain how memory is allocated on the call stack during recursive execution.

Appeared in:2082 Shrawan2081 Baishakh2078 Bhadra2073 Shrawan

#4Repeated 2 Times[6 Marks]User-defined Functions

What is function prototyping and function recursion? Write a recursive C program to calculate the factorial of a given positive integer.

Appeared in:2081 Bhadra2080 Baishakh

Structures

4 Questions

#1Repeated 6 Times[6 Marks]Structures

Write a program to define a structure named 'person' with members Name, Address, Salary, and Phone Number. Input details of 100 persons and display the entered information in descending order of salary.

Appeared in:2080 Baishakh2078 Bhadra2076 Chaitra2073 Shrawan2071 Chaitra2069 Ashad

#2Repeated 5 Times[8 Marks]Structures

What is a structure? Why is it necessary? Write a program to add two distances given in feet and inches using a user-defined structure.

Appeared in:2082 Shrawan2081 Bhadra2079 Bhadra2074 Ashwin2072 Kartik

#3Repeated 2 Times[8 Marks]Structures

What do you mean by nested structure? Write a C program to input roll, name, and address (city, street, ward) of 50 students using nested structures and display them.

Appeared in:2082 Baishakh2081 Bhadra

#4Repeated 2 Times[6 Marks]Structures

Differentiate between structure and union with memory layout diagrams. Write a program to demonstrate the size difference between a structure and a union containing identical members.

Appeared in:2082 Shrawan2079 Bhadra

File Management

2 Questions

#1Asked in 8 Exam Sessions[8 Marks]File Management

How is a binary file different from a text file? Write the syntax and use of fseek() and rewind() functions in C. Write a C program to write records of N students (Name, Roll, Marks) into a data file and display students scoring above 40.

Appeared in:2082 Shrawan2081 Bhadra2080 Baishakh2079 Bhadra2076 Ashwin2074 Ashwin2072 Kartik2071 Chaitra

#2Repeated 2 Times[8 Marks]File Management

Differentiate between text and binary files. Write a C program to write student records (roll, name, marks) into a binary file `student.dat` and read them back to display students who scored greater than 60 marks.

Appeared in:2081 Bhadra2082 Baishakh