42. What will be the output of the following C code?
#include <stdio.h>
int main()
{
int a=0;
a=5||2|1;
printf("%d",a);
return 0;
}
1
7
0
8
Answer: A) 1
43. What will be the output of the following C code?
#include <stdio.h>
int main()
{
int x =-100;
-100;
printf("%d",x);
return 0;
}
100
-100
0
Error
Answer: B) -100
44. What will be the output of the following C code?
#include <stdio.h>
int main()
{
int a,b,c;
a=0x10; b=010;
c=a+b;
printf("%d",c);
return 0;
}
20
24
Garbage
Error
Answer: B) 24
45. Which C keyword is used to extend the visibility of variables?
extend
extends
extern
auto
Answer: C) extern
46. What is the name of “&” operator in C?
Ampersand
And
Address of
None of the above
Answer: C) Address of
47. Which of the following are valid decision-making statements in C?
if
switch
nested if
All of these
Answer: D) All of these
48. Decision making in the C programming language is ___.
Repeating the same statement multiple times
Executing a set of statements based on some condition
Providing a name of the block of code
All of these
Answer: B) Executing a set of statements based on some condition
49. Which of the following is a true value in C programming?
1
“Progies”
! NULL
All of these
Answer: D) All of these
50. Ternary operator in C programming is ___.
if-else-if
? :
? ; ?
None of these
Answer: B) ? :
51. What will be the output of the following C code?
#include <stdio.h>
int main()
{
printf((43 > 43) ? "value 1 is greater!" : "value 1 is not greater!");
return 0;
}
value 1 is not greater
value 1 is greater
Error
None of these
Answer: A) value 1 is not greater
52. What is the correct syntax of if statement in C program?
if(condition){}
if(condition) :
If { [condition] }
None of these
Answer: A)
53. The if statement is a conditional statement?
True
False
Answer: A) True
54. When the condition of if statement is false, the flow of code will ___.
go into the if block
Exit the program
Continue the code after skipping the if block
None of these
Answer: C) Continue the code after skipping the if block
55. What will be the result of the following condition?
(! (25 > 25))
True
False
Error
None of these
Answer: A) True
56. Which statement is required to execute a block of code when the condition is false?
for
if
else
All of these
Answer: C) else
57. Can the else statement exist without the if statement in C?
Yes
No
Answer: B) No
58. Which of these if…else block syntax is correct?
A.
if(condition){
}
else {
}
B.
if(condition){
}
else(condition){
}
C.
if{}
D. None of these
Answer: A)
if(condition){
}
else {
}
59. The if-elseif-else statement in C programming is used?
Create multiple conditional statements
Return values
Loop in if-else block
All of these
Answer: A) Create multiple conditional statements
60. What will be the output of the following C code?
#include <stdio.h>
int main()
{
int marks = 43;
if (marks > 90)
printf("Grade : A ");
else if (marks > 75)
printf("Grade : B ");
else if (marks > 60)
printf("Grade : C ");
if (marks > 40)
printf("Grade : D ");
else
printf("Fail ");
return 0;
}
Grade : A
Grade : B
Grade : C
Grade : D
Answer: D) Grade : D
61. How many expressions can be checked using if…elseif…else statement?
100
1
Infinite
None of these
Answer: C) Infinite
62. Is it possible to nest if-else statements in C programming?
Yes
No
Answer: A) Yes
63. Which of the following syntax is correct for nested if-else statements?
A.
if(exp1){
if(exp2){
}
}
else {
if(exp3){
}
}
B.
B. if(exp1){
}else {
}
C.
if{}
D. None of these
Answer: A)
if(exp1){
if(exp2){
}
}
else {
if(exp3){
}
}
64. What will be the output of the following C code?
#include <stdio.h>
int main(){
int n = 65;
if (n >= 75) {
if (n >= 95) {
printf("Excellent");
}
else
printf("Pass");
}
else
printf("Fail");
}
Excellent
Pass
Fail
None of these
Answer: C) Fail
65. Multiple values of the same variable can be tested using ___.
switch
for
Function
All of these
Answer: A) switch
66. Without a break statement in switch what will happen?
All cases will work properly
Cases will fall through after matching the first check
Switch will throw error
All of these
Answer: B) Cases will fall through after matching the first check
67. When all cases are unmatched which case is matched in a switch statement?
Default case
First case
No case
None of these
Answer: A) Default case
68. What will be the output of the following C code?
#include <stdio.h>
int main(){
char grade = 'B';
switch (grade) {
case 'A':
printf("Excellent!\n");
case 'B':
case 'C':
printf("Well done\n");
case 'D':
printf("You passed\n");
case 'F':
printf("Better try again\n");
break;
default:
printf("Invalid grade\n");
}
}
Well done
You passed
Better try again
All of these
Answer: D) All of these
69. Loops in C programming are used to ___.
Execute a statement based on a condition
Execute a block of code repeatedly
Create a variable
None of these
Answer: B) Execute a block of code repeatedly
70. Which of these is an exit-controlled loop?
for
if
do…while
while
Answer: C) do…while
71. Which statements are used to change the execution sequence?
Loop control statement
Function statement
Conditional statement
All of these
Answer: A) Loop control statement
72. What will happen if the loop condition will never become false?
Program will throw an error
Program will loop infinitely
Loop will not run
None of these
Answer: B) Program will loop infinitely
73. Which of these statements is correct in case of while loop in C?
Executes the block till the condition become false
Is an entry controlled loop
There might be condition when the loop will not execute at all
All of these
Answer: D) All of these
74. Which of the following is valid syntax for creating a while loop?
A.while{} (condition)
B.while(condition){}
C.while{}
D.All of these
Answer: B)while(condition){}
75. What will be the output of the following C code?
#include <stdio.h>
int main(){
int a = 11;
while (a < 20) {
printf("%d ", a);
a += 2;
}
return 0;
}
11 13 15 17 19
11 12 13 14 15 16 17 18 19 20
11 13 15 17 19 21
None of these
Answer: A) 11 13 15 17 19
76. Which loop executes the block a specific number of times?
while loop
for loop
do…while loop
All of these
Answer: B) for loop
77. Which of the following parts of the for loop can be eliminated in C?
init
condition
increment
All of these
Answer: D) All of these
78. When all parts of the for loop are eliminated, what will happen?
For loop will not work
Infinite for loop
Error
None of these
Answer: B) Infinite for loop
79. When the condition of the do-while loop is false, how many times will it execute the code?
0
1
Infinite
All of these
Answer: B) 1
80. Can a loop be nested in C programming?
Yes
No
Answer: A) Yes
81. What will be the output of the following C code?
#include <stdio.h>
int main(){
int i, j;
for (i = 2; i < 10; i++) {
for (j = 2; j <= (i / j); j++)
if (!(i % j))
break;
if (j > (i / j))
printf("%d ", i);
}
return 0;
}
2 3 4 5 6 7 8 9
3 5 7 9
2 3 5 7
2 3 5 7 11
Answer: C) 2 3 5 7
5) C Strings MCQs
82. A string is terminated by ___.
Newline (‘\n’)
Null (‘\0’)
Whitespace
None of the above
Answer: B) Null (‘\0’)
83. Consider the below statement, can we assign a string to variable like this:
char c[100];
c = “C programming”;
Yes
No
Answer: B) No
84. Which format specifier is used to read and print the string using printf() and scanf() in C?
%c
%str
%p
%s
Answer: D) %s
85. Which function is used to read a line of text including spaces from the user in C?
scanf()
getc()
fgets()
All of the above
Answer: C) fgets()
86. Which function is used to concatenate two strings in C?
concat()
cat()
stringcat()
strcat()
Answer: D) strcat()
87. What will be the output of the following C code?
