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()
{
int a = 5, b = 3, c = 4;
printf("a = %d, b = %d\n", a, b, c);
}
Answer : A
Explanation
a=5,b=3 , as there are only two format specifiers for printing.
Q 2 - What is the output of the following program?
#include<stdio.h>
{
int x = 1;
switch(x)
{
default: printf("Hello");
case 1: printf("hi"); break;
}
}
Answer : B
Explanation
Hi, control reaches default-case after comparing the rest of case constants.
Q 3 - Identify the invalid constant used in fseek() function as ‘whence’ reference.
Answer : C
Explanation
SEEK_BEG, all the rest are valid constants defined in ‘stdio.h’
Q 4 - What is the output of the following program?
#include<stdio.h>
main()
{
char *s = "Hello, "
"World!";
printf("%s", s);
}
Answer : A
Explanation
Two immediate string constant are considered as single string constant.
Q 5 - What is the output of the following program?
#include<stdio.h>
main()
{
int x;
float y;
y = x = 7.5;
printf("x=%d y=%f", x, y);
}
Answer : A
Explanation
‘x’ gets the integral value from 7.5 which is 7 and the same is initialized to ‘y’.
Q 6 - Choose the correct program that round off x value (a float value) to an int value to return the output value 4,
A - float x = 3.6;
int y = (int)(x + 0.5); printf ("Result = %d\n", y );
B - float x = 3.6;
int y = int(x + 0.5); printf ("Result = %d\n", y );
C - float x = 3.6;
int y = (int)x + 0.5 printf ("Result = %d\n", y );
D - float x = 3.6;
int y = (int)((int)x + 0.5) printf ("Result = %d\n", y );
Answer : A
Explanation
#include <math.h>
#include <stdio.h>
int main()
{
float x = 3.6;
int y = (int)(x + 0.5);
printf ("Result = %d\n", y );
return 0;
}
Q 7 - A bitwise operator “&” can turn-off a particular bit into a number.
Answer : A
Explanation
The bitwise AND operator “&” compares each bit of the first operand with the corresponding bit of the second operand. During comparison, if both operands bits are 1, the corresponding result bit is set to 1. Otherwise, the corresponding result bit is set to 0.
Q 8 - How many times the given below program will print "India"?
#include<stdio.h>
int main ()
{
int x;
for(x=-1; x<=20; x++)int i;
{
if(x < 10)
continue;
else
break;
printf("India");
}
Answer : C
Explanation
Following for loop there is only one statement, that is int i; break & continue are appearing out side for block which is compile error
#include<stdio.h>
int main ()
{
int x;
for(x=-1; x<=20; x++)int i;
{
if(x < 10)
continue;
else
break;
printf("India");
}
Q 9 - Choose the correct order of evaluation,
A - Relational Arithmetic Logical Assignment
B - Arithmetic Relational Logical Assignment
Answer : B
Explanation
As per the operators preference.
Q 10 - Which statement can print \n on the screen?
Answer : A
Explanation
Option A is the correct answer. In C programming language, "\n" is the escape sequence for printing a new line character. In printf("\\n"); statement, "\\" symbol will be printed as "\" and “n” will be known as a common symbol.
