Software - Programming concept

Programming Concepts (C Language - Pattern Printing)

This section requires practical application of programming.

• Sample Task 1: Write a C program to print the following two patterns based on a user-inputted number of rows (e.g., if the user enters 4):

  Pattern 1:

  *
  **
  ***
  ****
  

  Pattern 2:

  1
  1 2
  1 2 3
  1 2 3 4
  

• Sample Task 2: Different Patterns

  • Task: Write a C program that takes an integer n as input and prints:
    • An inverted right-angled triangle of stars (e.g., for n=4: *_, _, *_, _).

  ****
  ***
  **
  *
  

• Sample Task 3: Number Sequences

  • Task: Write a C program that takes an integer n as input and prints the first n numbers of the Fibonacci sequence

  for n= 8
  0 1 1 2 3 5 8 13
  
  

  • Skills Tested: Loops, variable assignment, handling sequences.

• Sample Task 4: Simple Array Processing

  • Task: Write a C program that asks the user to enter 5 integers, stores them in an array, and then calculates and prints the sum and average of the numbers in the array.
  • Skills Tested: Array declaration and access, loops for input and processing, basic arithmetic operations, integer/float division for average.

• Sample Answer for task 1 (C Code):

  #include <stdio.h>
  
  int main() {
      int rows;
  
      // Get input from user
      printf("Enter the number of rows: ");
      scanf("%d", &rows);
  
      if (rows <= 0) {
          printf("Please enter a positive number for rows.\n");
          return 1; // Indicate error
      }
  
      // --- Print Pattern 1 ---
      printf("\nPattern 1:\n");
      for (int i = 1; i <= rows; i++) { // Outer loop for rows
          for (int j = 1; j <= i; j++) { // Inner loop for stars in each row
              printf("*");
          }
          printf("\n"); // Move to the next line after each row
      }
  
      // --- Print Pattern 2 ---
      printf("\nPattern 2:\n");
      for (int i = 1; i <= rows; i++) { // Outer loop for rows
          for (int j = 1; j <= i; j++) { // Inner loop for numbers in each row
              printf("%d ", j); // Print the inner loop counter 'j'
          }
          printf("\n"); // Move to the next line after each row
      }
  
      return 0; // Indicate successful execution
  }