Fundamentals of C Language - Quiz

Q: Which of the following is not a valid data type in C?

A. char
B. int
C. float
D. string

Correct Option: D
Explanation:

Answer: D

Explanation: string is not a valid data type in C. Instead, strings are represented as arrays of characters in C.

Q: Which of the following language is predecessor to C Programming Language?

A. A
B. BTYU
C. BCPL
D. C++

Correct Option: C
Explanation: BCPL

Q: What is the output of the following C code?


#include <stdio.h>

int main() {
    int x = 5;
    printf("%d", x++);
    return 0;
}

A. 5
B. 6
C. 4
D. The code will result in a compile error

Correct Option: A
Explanation:

Answer: A

Explanation: The value of x is first printed using printf, and then incremented by the ++ operator. Therefore, the output will be 5.

Q: What is the output of the following C code?


#include <stdio.h>

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    printf("%d", *(arr + 2));
    return 0;
}

A. 1
B. 2
C. 3
D. 4

Correct Option: C
Explanation:

Answer: C

Explanation: The expression *(arr + 2) is equivalent to arr[2], which accesses the third element of the arr array. Therefore, the output will be 3.

Q: Which of the following symbol is used to denote a pre-processor statement?

A. !
B. #
C. ~
D. ;

Correct Option: B
Explanation: #

Q: C

A. System Programming
B. Application Programming
C. Both A and B
D. Neither A nor B

Correct Option: C
Explanation: Both A and B System programming involves designing and writing computer programs that allow the computer hardware to interface with the programmer and the user, leading to the effective execution of application software on the computer system. An application program is a comprehensive, self-contained program that performs a particular function directly for the user. Among many others, application programs include: <ul> <li>Email</li> <li>Web browsers</li> <li>Games</li> <li>Word processors</li> <li>Enterprise software</li> <li>Accounting software</li> <li>Graphics software</li> <li>Media players</li> <li>Database management</li> </ul> Because every program has a particular application for the end user, the term "application" is used. For instance, a word processor can help the user create an article, whereas a game application can be used for entertainment. An application program is also known as an application or application software.

Q: C language is available for which of the following Operating Systems?

A. DOS
B. Windows
C. Unix
D. All of these

Correct Option: D
Explanation: All of these

Q: Write a function to swaps the values of two integers.

A. No solution exist.
B. Solution need 2 extra variables
C. Solution exist without any extra variables
D. Solution need 1 extra variable

Correct Option: C
Explanation: Solution c Solution exist without any extra variables

1.

void swap(int a, int b)
{
int c;
c=a;
a=b;
b=c;
}

2.

void swap (int a, int b)
{

a=a+b;

b=a-b;

a=a-b;

}

Solution2 is the best solution since no extra variable is required.

Q: C was developed in the year ___

A. 1970
B. 1972
C. 1976
D. 1975

Correct Option: B
Explanation: 1972

Q: What is the output of the following C code?


#include <stdio.h>

int main() {
    int i = 0;
    while (i < 5) {
        printf("%d ", i);
        i++;
    }
    return 0;
}

A. 0 1 2 3 4
B. 1 2 3 4 5
C. 5 4 3 2 1
D. The code will result in an infinite loop

Correct Option: A
Explanation:

Answer: A

Explanation: The while loop continues to execute as long as i is less than 5. Inside the loop, the value of i is printed using printf, and then incremented by 1. Therefore, the output will be "0 1 2 3 4".

Fundamentals of C Language - Quiz

Which of the following is not a valid data type in C?

Which of the following language is predecessor to C Programming Language?

What is the output of the following C code? #include <stdio.h> int main() { int x = 5; printf("%d", x++); return 0; }

What is the output of the following C code? #include <stdio.h> int main() { int arr[] = {1, 2, 3, 4, 5}; printf("%d", *(arr + 2)); return 0; }

Which of the following symbol is used to denote a pre-processor statement?

C

C language is available for which of the following Operating Systems?

Write a function to swaps the values of two integers.

C was developed in the year ___

What is the output of the following C code? #include <stdio.h> int main() { int i = 0; while (i < 5) { printf("%d ", i); i++; } return 0; }

What is the output of the following C code?

What is the output of the following C code?

What is the output of the following C code?