C language

1. Who is the father of the C language?

• A) James Gosling

• B) Dennis Ritchie

• C) Bjarne Stroustrup

• D) Ken Thompson

2. What is the extension of a C program file?

• A) .cpp

• B) .java

• C) .c

• D) .py

3. What is the default return type of the main() function in C?

• A) int

• B) void

• C) float

• D) char

4. Which of the following is used to print output in C?

• A) scanf()

• B) printf()

• D) echo()

• D) void()

5.Which header file is required for using printf() and scanf()?

• A) stdio.h

• B) conio.h

• C) stdlib.h

• D) string.h

6. How is a single-line comment written in C?

• A) <!-- Comment -->

• B) // Comment

• C) /* Comment */

• D) # Comment

7. Which of the following is NOT a valid variable name in C?

• A) my_var

• B) 2ndVar

• C) _value

• D) count123

8. What will sizeof(int) return on a 32-bit system?

• A) 1

• B) 2

• C) 4

• D) 8

9. What will be the output of printf("%d", 5/2);?

• A) 2

• B) 2.5

• C) 2.0

• D) 2.000000

10. What is the format specifier for a floating-point number in C?

• A) %c

• B) %d

• C) %f

• D) %s