Computer Science BIEK XII Notes: C Programming Complete Notes XII BIEK , Computer Science Past Paper Question With Answer

PREPARED BY: SIR ZUBAIR KHAN 

The Textbook of COMPUTER SCIENCE For Class XII – Class 12 – Sindh Textbook Board 

Q1: Write a C program to print the following output

(a).

55555

4444

333

22

1

Ans: Here's a C program to generate the desired output. 

#include <stdio.h>

int main() {

   int i, j;

   for (i = 5; i >= 1; i--) {

      for (j = 1; j <= i; j++) {

         printf("%d", i);

      }

      printf("\n");

   }

   return 0;

}

Explanation:

The outer loop iterates from 5 to 1, with i decreasing by 1 in each iteration.

The inner loop iterates from 1 to i and prints the value of i j times on a single line.

After the inner loop, a newline character is printed to move to the next line.

(b). Write a C program to print the following output

*

**

***

****

*****

Ans: Here's a C program to generate the desired output.

#include <stdio.h>

int main() {

   int i, j;

   for (i = 1; i <= 5; i++) {

      for (j = 1; j <= i; j++) {

         printf("*");

      }

      printf("\n");

   }

   return 0;

}

Explanation:

The outer loop iterates from 1 to 5, with i increasing by 1 in each iteration.

The inner loop iterates from 1 to i, and prints a * character j times on a single line.

After the inner loop, a newline character is printed to move to the next line.

(c). Write a C program to print the following output

1

12

123

1234

12345

Ans: Here's a C program to generate the desired output.

#include <stdio.h>

int main() {

   int i, j;

   for (i = 1; i <= 5; i++) {

      for (j = 1; j <= i; j++) {

         printf("%d", j);

      }

      printf("\n");

   }

   return 0;

}

Explanation:

The outer loop iterates from 1 to 5, with i increasing by 1 in each iteration.

The inner loop iterates from 1 to i, and prints the value of j on a single line.

After the inner loop, a newline character is printed to move to the next line.

(d). Write a C program to print the following output

1

4 4

9 9 9

16 16 16 16

25 25 25 25 25

Ans: Here's a C program to generate the desired output.

#include <stdio.h>

int main() {

   int i, j;

   for (i = 1; i <= 5; i++) {

      for (j = 1; j <= i; j++) {

         printf("%d ", i*i);

      }

      printf("\n");

   }

   return 0;

}

Explanation:

The outer loop iterates from 1 to 5, with i increasing by 1 in each iteration.

The inner loop iterates from 1 to i, and prints the value of i*i followed by a space on a single line.

After the inner loop, a newline character is printed to move to the next line.

(e). Write a C program to print the following output

2        3        4        5        6

3        4        5        6        7

4        5        6        7        8

5        6        7        8        9 

Ans: Here's a C program to generate the desired output.

#include <stdio.h>

int main() {

   int i, j;

   for (i = 2; i <= 5; i++) {

      for (j = 0; j < 5; j++) {

         printf("%-8d", i + j);

      }

      printf("\n");

   }

   return 0;

}

Explanation:

The outer loop iterates from 2 to 5, with i increasing by 1 in each iteration.

The inner loop iterates from 0 to 4, and prints the value of i+j left-justified and padded to 8 characters on a single line.

After the inner loop, a newline character is printed to move to the next line.