Solved 2025: FYUG Even Semester Exam, 2025 Computer Science

UNIT-I

1. Answer any four questions [1x4=4]

3. (b) Write short notes on the following: [2x4=8]

• Compiler: A program that translates high-level source code into machine-readable object code all at once.
• Assembler: A utility that translates assembly language code into machine language.
• Syntax Error: Errors that occur when the code violates the grammatical rules of the programming language.
• Run-time Error: Errors that occur during the execution of a program, such as division by zero.

UNIT-II

4. (a) What is a flowchart? [1 Mark]

A flowchart is a graphical representation of an algorithm or process using different symbols

.

6. (a) Rules for designing a flowchart & Circle Area [2+6=8]

Rules for Flowcharting:

• Use standard symbols (Oval for Start/End, Rectangle for Process).
• Flow direction should be from top to bottom or left to right.
• Ensure every flowchart has a single Start and at least one End.

Algorithm for Area of Circle:

1. Start.
2. Input radius (R).
3. Calculate Area = 3.14 * R * R.
4. Display Area.
5. Stop.

UNIT-III

8. (a) What are the different primary data types used in C? [8 Marks]

Primary data types in C include:

Type	Keyword	Description
Integer	int	Stores whole numbers.
Character	char	Stores a single character.
Floating Point	float	Stores decimal numbers.
Double	double	Stores high-precision decimals.

9. (a) Simple Interest Program [4 Marks]

#include <stdio.h>
int main() {
  float p, r, t, si;
  printf("Enter Principal, Rate, Time: ");
  scanf("%f %f %f", &p, &r, &t);
  si = (p * r * t) / 100;
  printf("Simple Interest = %f", si);
  return 0;
}

UNIT-IV

11. (a) Entry-controlled vs Exit-controlled loop [8 Marks]

FeatureEntry-controlled (while)Exit-controlled (do-while) Condition CheckCheck at the beginning.Check at the end. Min ExecutionZero times.At least once.

12. (a) Factorial using while loop [5 Marks]

int n, i=1, fact=1;
while(i <= n) {
  fact = fact * i;
  i++;
}

UNIT-V

14. (b) Difference between call by value and call by reference. [8 Marks]

Call by Value: A copy of the actual argument is passed to the function. Changes made in the function do not affect the original variable.

Call by Reference: The address of the variable is passed. Changes made in the function affect the original variable.

15. (a) Sum and Average of Array Elements [6 Marks]

#include <stdio.h>
int main() {
  int arr[5] = {10, 20, 30, 40, 50}, sum = 0;
  for(int i=0; i<5; i++) { sum += arr[i]; }
  printf("Sum: %d, Avg: %f", sum, sum/5.0);
  return 0;
}

Exam Success Strategy

• Flowcharts: Always use the correct terminal (Oval) and process (Rectangle) symbols to ensure full marks.
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• Syntax: For programs, ensure you include header files like <stdio.h>[span_31](end_span).
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• Keywords: Mention specific keywords like int, float, or while when defining data types or loops[span_33](end_span).

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