CSE122: Programming Problem Solving: Easy & Important Questions with Solution

CSE-122: Programming Problem Solving: Easy & Important Questions with Solution

Output Tracing:

1. What will be the output of the following code segments?

#include<stdio.h>

int main() {

int p = 3, q = 7, r = 9;

r = p*3;

printf("1. P = %d\n", p*=3);

q = ++p - r--;

printf("2. P = %d Q = %d\n",p++,--q);

r = (--q) + (p++);

printf("3. %d - %d\n", q--, ++r);

return 0;

}

Answer:

2. What will be the output of the following code segments?

#include <stdio.h>

int main(){

int i,n = 1;

for(i=1; i<20; i+=2, n++){

if(n % 5 == 0){

printf("H2O\n");

n*=2;

continue;

}

if(n%9 == 0){

printf("Water\n");

break;

}

else{

n+=2;

printf("Restaurant\n");

}

return 0;

}

Answer:

3. What will be the output of the following code segments?

#include <stdio.h>

void Boom(int a, int *b)

{

*b = *b + a;

}

int Start()

{

int a = 5, b = 7, *p;

p = &a;

(*p)++;

Boom(*p, &b);

printf("%d %d\n", a, b);

return *p;

}

int main()

{

int x = Start();

printf("Start : %d\n", x);

}

Answer:

4. What will be the output of the following code segments?

#include <stdio.h>

int main()

{

char sure[100] = "What about the Nomination!", *ptr;

ptr = sure;

ptr++;

printf("%s\n", ptr);

sure[4] = '\0';

++ptr;

printf("%s\n", sure);

}

Answer:

Problem solving: Solve the following problems.

5. Have you ever heard of “Give Away!” problem? Ok, this is the Give Away problem of this Exam! You have to write a C program that will take input two integer a & b and also print b & a.

Sample Input: 3 5

Sample Output: 5 3

Sample Input: 7 13

Sample Output: 13 7

Answer:

6. You were riding on Uber from Nilkhet to CSE Building with an initial speed of U (u) and last speed was V(v). Acceleration of the bike was A (a). So now write a C program that will take three input: U V and A and will output the required time T (t). You should use the given formula to calculate T (t).

v = u + at

Sample Input: 5 10 2

Sample Output: 2.5

Sample Input: 7 14 3

Sample Output: 2.33

Answer:

7. Its 8:00 AM. You have a PPS Exam on 10:00 AM to 12 AM inclusive. You have now hired a Pathao Ride. It will take T hours to reach CSE building where your Exam will be held.

Now write a C program that will take input the required time T to reach and print “Aya Porsi!” if you reach before 10 AM. Otherwise print “Shuru Hoya Gelo!” if you reach during the exam and if you reach after the exam time, print “Khaise!”.

Sample Input: 3

Sample Output: Shuru Hoya Gelo!

Sample Input: 1

Sample Output: Aya Porsi!

Answer:

8. Write a C program that will take input two integers a & b and count the number of integers that are divisible by 4.

Sample Input: 1 10

Sample Output: 2

Sample Input: 8 20

Sample Output: 4

Answer:

9. Write a C program that will take input an array of 10 integer number and print only the numbers that are between 3 and 7 in reverse of their appearance!

Sample Input: 1 3 5 4 9 8 3 10 4 9

Sample Output: 4 3 4 5 3

Sample Input: 2 1 3 5 2 6 1 2 4 9

Sample Output: 4 5 3 6

Explanation: In the first Sample, Numbers between 3 and 7 has appeared [ 3 5 4 3 4] in this way, but you have to print in reverse, [4 3 4 5 3].

Answer:

10. Do you heard about Time Dialiation? Special relativity states that time can pass at different rates in different reference frames. Ovserve the following equatuion.

t¹= t * sqrt(1 – v² / c²)

Given the value of t¹ & v can you calculate the Stationary time

Print to two decimal points. Value of C = 299792.458 (KM)

Sample Input: 20 20000

Sample Output: 20.04

Sample Input: 27 30001

Sample Output: 27.14

Answer:

11. You are given 3 integers. First one is the available balance (in BDT) in your mobile phone. The second, the call rate (in BDT / minute). Finally, the amount of time you want to talk (in minutes). Write a program that will print “Call” if you have sufficient balance left or “Recharge” otherwise.

Sample Input: 20 2 5

Sample Output: Call

Sample Input: 2 2 5

Sample Output: Recharge

Answer:

12. What will be the output of the following code segments?

Answer:

13. What will be the output of the following code segments?

Answer:

14. Write code segments according to the instructions:

Answer:

15. Write a C function to check if a number is prime or not.

Answer:

15. Write a C function Calculate() that will have an integer parameter and calculate the square and the cube of that integer and return the values.

Hint: Use call by reference.

Answer: