C Programming Que. paper.

@gauravbhorkar-Pf9kZD • Oct 22, 2024

Oct 22, 2024

1.2K

I want to share some of the questions from my 3rd sem exam of C language.
Sharing ALL questions is not possible. (Most of them are easy)

Q1. Distinguish between (*m)[5] and *m[5]?

Q2. What is UNION? How it is different from STRUCTURE?

Q3. Distinguish between syntax and semantic error?

Q4. What do you mean by Input/Output stream?

Q5. Find the output of the program:
main()
{

int a=10, b=20, c=30, d;
d = a > b ? (a > c ? a : c) : b > c ? b : c;
printf ("%d",d);

}

Very easy questions!:smile:

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yadavundertaker mohit

@yadavundertaker-0p3HBs • Nov 10, 2009

for you they seems to be easy but for me like Schrödinger equation
0
Manish Goyal

@manish-r2Hoep • Nov 10, 2009

5😲utput of program will be 30
0
sarveshgupta

@sarveshgupta-txtmu5 • Nov 10, 2009

if you know Structure you also know Union

they are collection of various data types but have a difference

The memory of Structure is equal to the sum of the memory of all the data types

But Union takes only the largest value only

Say we have a char, int then memory for structure will be 3 while Union it will be 2
0
sarveshgupta

@sarveshgupta-txtmu5 • Nov 10, 2009

Syntax error is the error in the syntax that is use forget to follow the rules of writing code in C

it means you forget a ';' or make a spelling mistake of 'printf to be pintf'

Semantics are the logical errors they are generally not recognised by the compiler with exceptions of divide by zero

Semantics means you have done a+b when you had to do a+c
0
gaurav.bhorkar

@gauravbhorkar-Pf9kZD • Nov 10, 2009

goyal420
5😲utput of program will be 30
Can you give justification for your answer?
0
gaurav.bhorkar

@gauravbhorkar-Pf9kZD • Nov 10, 2009

@sarveshgupta
All your answers are correct. Good.
0
Maelstrom

@maelstrom-jwDZvD • Nov 10, 2009

gaurav.bhorkar
Q1. Distinguish between (*m)[5] and *m[5]?
(*m)[5] means "pointer to an array of 5 integers"
*m[5] means "array of integer pointers"

As for the Input/Output stream question, I'm not sure, but I think that they are interfaces provided to the programmer to ensure that he does not have to worry about the actual implementation of input/output (i.e. writing individual bytes to printer or monitor etc.).
0
sarveshgupta

@sarveshgupta-txtmu5 • Nov 11, 2009

Thanks Gaurav

And as far as input/output stream are concerned

Stream is an array of bytes

all the input output of the values is considered as a stream of bytes by the compiler

an int variable has 2 bytes , a char has 1 byte

When the input and output is performed it is considered as bytes
0
Manish Goyal

@manish-r2Hoep • Nov 11, 2009

main()
{
int a=10, b=20, c=30, d;
d = a > b ? (a > c ? a : c) : b > c ? b : c;
printf ("%d",d);

}
first of all it will check whether a>b ie not true so it check b>c which is again false
so it will give value 30
I hope my answer is not wrong
0
gaurav.bhorkar

@gauravbhorkar-Pf9kZD • Nov 11, 2009

goyal420
main()
{

int a=10, b=20, c=30, d;
d = a > b ? (a > c ? a : c) : b > c ? b : c;
printf ("%d",d);

}
first of all it will check whether a>b ie not true so it check b>c which is again false
so it will give value 30
I hope my answer is not wrong
You are absolutely correct. Good Job!
0
gaurav.bhorkar

@gauravbhorkar-Pf9kZD • Nov 11, 2009

I don't know about Input/Output stream.

Sarveshgupta may be correct.
0
Gurjeet Singh

@gurjeet-LUX7B1 • Nov 11, 2009

main()
{
printf("%%%%%",7);
}
what is the output:
1:7
2:error
3:%%%
4:%%%%%
0
Saandeep Sreerambatla

@saandeep-sreerambatla-hWHU1M • Nov 11, 2009

It gives syntax error 😀

The bracket mustbe } not {

PS.Start new thread for questions 😀
0
sarveshgupta

@sarveshgupta-txtmu5 • Nov 11, 2009

I think he has placed that bracket by mistake

and printf has everything inside double quotes except the variables whose values are to be substituted with their type specifiers
Hope i am correct
0