Challenge Accepted: c programming MCQ quiz top 50

What will be the output of the following program
main( )
{
int k, num=30;
k=(num>5 ? (num<= 10 ? 100:200):500);
printf(“\n%d”, num);
}

what will be output of following expression x=15-2*(6+18)/3+6

 What is the correct way to swap the values of two variables x and y using the comma operator?

main() {
long i = 30000;
printf(“%d”, i); }

the output is

The == operator is used for assignment, while the = operator is used for comparison.

………. Function is used to display output on screen

What is the correct way to pass an array to a function in C?

A pointer is

What is the main difference between call by value and call by reference in C?

How many times the following program would print (“abc”)?
main()
{
printf(“\nabc”);
main();

_____ and _____ are used to test more than one condition

what will be the output of the following program?
main()
{
int a=300,b,c;
if (a>=400)
b=300;
c=200;
printf(“\n%d%d”,b,c);
}

Which of the following is not a valid C variable name?

Which of the following statements is FALSE?

What is the syntax for calling a function in C?

Which operator is used to get address of the variable?

What is the return type of a function that doesn't return any value?

What is the primary purpose of header files in C, related to functions?

Syntax errors will be detected by the compoler.

Output of the program given below is
int i;
main()
{
printf(“%d”, i);
}

Which operator is used to perform pointer arithmetic in C?

Which loop iterates a fixed number of times?

Which of the following operator has the highest precedence?

What is the purpose of the strncat function in C?

What is the significance of the void keyword in a function declaration?

What is the purpose of the "auto" keyword in a function parameter list?

What is the output of the following program ?
void main() {
int x=40;y=30;z=80;
if(x<y<z)
printf(“\n Hello world”);
else
printf(“\nGood by”);

}

Which of the following data type will throw an error on modulus operation(%)?

A switch statement is used to______

What will be the output of the following program?
main()
{
int i = 5;
printf(“%d”, i=++i==6);
}

Which statement is used to execute a block of code at least once?

Every C program must atleast contain______ function(s).

What is constant?

Which special symbol is allowed for variable declaration ____________?

What is the purpose of the static keyword in C?

What is the value of x after x = (a > b) ? a : b when a = 5 and b = 3?

.What will be output if you will compile and execute the following c code?
int extern x;
void main()
printf("%d",x);
x=2;
getch();
}
int x=23;

A variable which is visible only in the function in which it is defined, is called

How can you use the comma operator to swap the values of two variables efficiently?

What is the result of a * b + c / d without parentheses?

Which logical operator in C returns true if one operands are true?

The underscrore can be used anywhere in an identifer.

A Link is............

Which is a storage class?

{ } are used to group statements together as in a function, or in the body of a loop. Such a
grouping is known as _________________.

Elements in an array are accessed ____________

What will be output if you will compile and execute the following c code?
#include "string.h"
void main(){
clrscr();
printf("%d %d",sizeof("string"),strlen("string"));
getch();
}

What is the correct way to declare a function pointer in C?

What is the index of the last element in an array of size 10?

Which operator is used to increment a variable by 1?

ANSI C treat the variables name and Name to be same.

Which of the following operator takes only integer operands?

Which operator is used to obtain the address of a variable in C?

Which is the valid range of “int” data type?

What is the output of the expression: 10 / 0?

a -=b is equivalent to ________________.

What is the correct way to declare a constant in C?

Which of the following is a scalar data type?

What is the logical operator equivalent of ~x?

The operator && is used for ________.

Which is/are the disadvantage(s) of C language?

How do you access the elements of an array using a loop?

What does the expression *ptr mean if ptr is a pointer variable?

What will be the maximum size of a float variable in c?

What is the difference between &x and *x?

How do you declare an array of 5 integers?

Functions used in programs that are defined by programmers are called

Choose the correct answer

An Ampersand in scanf() before the name of a variable denotes ___________.

The break statement causes an exit

What is the output of the following program segment?
main()
{
int i = 1;
do
{ printf(“%d..”, i);
} while(i--);
}

What is the default mechanism for passing arguments in C?

What is the result of x & 7 when x = 13 (binary: 1101)?

Find out on which line no . you will get an error ?
Line 1: void main ( )
Line 2: {
Line 3: print(“\n Hello World”)
Line 4: }

Explain the difference between prefix and postfix increment/decrement operators (++x vs x++).

How to add standard input or output header file in C program

What is recursion in C, and what is its potential drawback?

Which is the correct way to declare a pointer?

Which of the following is not a feature of C language? [ ]

Consider the following program
main ( )
{ float a = 0.5, b = 0.7;
if (b < 0.8)
if (a < 0.5) printf (“ABCD”);
else printf (“PQR”);
else printf (“JKLF);
}
The output is

Which operator is used to assign a value to a variable?

What will be the output of the following C code?
#include <stdio.h>
int main(){
int x = 10, *ptr;
ptr = &x;
*ptr = 20;
printf("%d", x);
}

5 Find the output of the following program?
#include<stdio.h>
#include<conio.h>
void main()
{
int i=4,z=12;
clrscr();
if(i=5 || z>50)
printf("\n Samosa");
else
printf("\n Dosa");
getch();
}

#include<stdio.h>
#include<conio.h>
void main()
{
int i=4,z=12;
clrscr();
if(i=5 && z>50)
printf("\n Let us C");
else
printf("\n Let us Not C");
getch();
}

What is the difference between pre-increment and post-increment operators within a function argument?

Which of the following is a logical Not operator?

............is not supported by Procedural Programming.

What does the sizeof operator return in C?

Unsigned integer occupies

Which of the following instructions have only one operand?

Which of the following functions is used to read a character from the standard input in C?

What would be the final value of ‘x’ after the execution of the following program?
#include<stdio.h>
#include<conio.h>
Void main()
{
int x = 1;
clrscr();
do while(x <=10)
{
X++;
}
While (x <=5);
Print(“\n x =%d”,x);
}

printf (“%d”, printf (“tim”));

In C, what does the #define preprocessor directive do?

Only one function may be named main().

Every line in a C program should end with a semicolon.

What is the primary purpose of using functions in C programs?

main() is where the program begins its execution.