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- Operators in C
- C - Operators
- C - Arithmetic Operators
- C - Unary Operators
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- C - Bitwise Operators
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- C - Ternary Operator
- C - sizeof Operator
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- Decision Making & Control Statements
- C - Decision Making
- C - if Statement
- C - if...else Statement
- C - if...else if Ladder
- C - Nested if Statements
- C - Switch Statement
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- C - Switch Case Using Range
- Loops in C
- C - Loops
- C - For Loop
- C - While Loop
- C - Do...while Loop
- C - For Loop vs While Loop
- C - Nested Loop
- C - Infinite Loop
- C - Break Statement
- C - Continue Statement
- C - Goto Statement
- Functions in C
- C - Functions
- C - Function Prototype
- C - Main Function
- C - Function call by Value
- C - Function call by reference
- C - Nested Functions
- C - Variadic Functions
- C - User-Defined Functions
- C - Callback Function
- C - Return Statement
- C - Recursion
- C - Predefined Identifier __func__
- Scope Rules in C
- C - Scope Rules
- C - Static Variables
- C - Global Variables
- Arrays in C
- C - Arrays
- C - Properties of Array
- C - Multi-Dimensional Arrays
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- C - Variable Length Arrays
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- Strings in C
- C - Strings
- C - Array of Strings
- C - Character Arrays
- C - Special Characters
- Pointers in C
- C - Pointers
- C - Initialization of Pointer Arrays
- C - Applications of Pointers
- C - Dereference Pointer
- C - NULL Pointer
- C - void Pointer
- C - Const Pointers & Pointer to Const
- C - Dangling Pointers
- C - Pointer Arithmetics
- C - Pointers and Arrays
- C - Pointer vs Array
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- C - Array of Pointers
- C - Pointers vs. Multi-dimensional Arrays
- C - Pointer to Pointer
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- C - Near, Far and Huge Pointers
- C - Restrict Keyword
- User-Defined Data Types
- C - Structures
- C - Structures and Functions
- C - Arrays of Structures
- C - Self-Referential Structures
- C - Dot (.) Operator
- C - Lookup Tables
- C - Enumeration (or enum)
- C - Structure Padding and Packing
- C - Nested Structures
- C - Anonymous Structure and Union
- C - Unions
- C - Bit Fields
- C - Typedef
- C - Flexible Array Members in Structures
- C - Structures vs Unions
- Memory Management in C
- C - Memory Layout
- C - Memory Management
- C - Memory Address
- C - Storage Classes
- C - Dynamic Array Resizing
- C - Memory Leaks
- File Handling in C
- C - File Handling
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- C - File Operations
- C - Formatted Output
- C - getc, getchar, getch, getche
- Preprocessors in C
- C - Preprocessors
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- Miscellaneous Topics
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C Programming - Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to C Programming Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - What is the output of the below code snippet?
#include<stdio.h>
main()
{
for(;;)printf("Hello");
}
Answer : A
Explanation
infinite loop, with second expression of for being absent it is considered as true by default.
Q 2 - What is the output of the following program?
#include<stdio.h>
main()
{
int x = 65, *p = &x;
void *q=p;
char *r=q;
printf("%c",*r);
}
Answer : B
Explanation
A, void pointer is a generic pointer and can hold any variables address. ASCII character for the value 65 is A
Q 3 - Linker generates ___ file.
Answer : B
Explanation
(b). Linker links the object code of your program and library code to produce executable.
Q 4 - Which of the following is used in mode string to open the file in binary mode?
Answer : B
Explanation
To perform unformatted data I/O a file is opened in binary mode and is represented with the alphabet b in the mode string.
Q 5 - What is the output of the following program?
#include<stdio.h>
main()
{
char s1[50], s2[50] = "Hello";
s1 = s2;
printf("%s", s1);
}
Answer : C
Explanation
s1 refers to base address and is constant. Hence raising to lvalue required compile time error.
Q 6 - int fun();- The declaration indicates the presence of a function defined inside the current module or in the same file.
Answer : A
Explanation
The function definition can even appear in another source code and can be linked from library while linking.
Q 7 - Which library function can convert aninteger/longto astring?
Answer : A
Explanation
In C, ltoa() function converts long/integer data type to string data type.
char *ltoa(long N, char *str, int base);
Q 8 - Which of the following header file can be used to define the NULL macro?
A - stdio.h, locale.h, stddef.h, stdlib.h, string.h,
B - stddef.h, locale.h, math.h, stdlib.h, string.h,
Answer : A
Explanation
In C library, NULL Macrois the value of a null pointer constant. It may be defined as((void*)0), 0or0Ldepending on the compiler merchant.
Q 9 - What is the role of "r+" on the file "NOTES.TXT" in the given below code?
#include<stdio.h>
int main ()
{
FILE *fp;
fp = fopen("NOTES.TXT", "r+");
return 0;
}
A - "r+" open the file "NOTES.TXT" file for reading
B - "r+" open the file "NOTES.TXT" file for writing
C - "r+" open the file "NOTES.TXT" file for appending
D - "r+" open the file "NOTES.TXT" file for reading & writing both
Answer : D
Explanation
fopen() function is used to open a file and r++ enable the file for reading and writing.
#include<stdio.h>
int main ()
{
FILE *fp;
fp = fopen("NOTES.TXT", "r+");
return 0;
}
Q 10 - extern int fun(); - The declaration indicates the presence of a global function defined outside the current module or in another file.
Answer : A
Explanation
Extern is used to resolve the scope of global identifier.