C Programming MCQ Questions and Answers on Conditional Statements 2
Learn C Programming MCQ Questions and Answers on Conditional Statements like Ternary Operator, IF, ELSE and ELSE IF statements. Easily attend exams after reading these Multiple Choice Questions.
Go through C Theory Notes on Conditional Operators before studying questions.
1) What is the output of C Program.?
int main()
{
int x=1;
float y = 1.0;
if(x == y)
{
printf(“Polon”);
}
if( 1 == 1.0)
{
printf(“Golfn”);
}
if( 1.0 == 1.0f )
{
printf(“Boxingn”);
}
return 0;
}
A) No Output
B) Boxing
C) Golf Boxing
D) Polo Golf Boxing
Answer [=]
D
Explanation:
Integer is promoted to float or double automatically before comparison. So all are equal.
1 == 1.0 == 1.0f
2) What is the output of C Program.?
int main()
{
int a=9;
if(a=8)
{
printf(“Kangaroon”);
}
printf(“Eggsn”);
return 0;
}
A) No output
B) Eggs
C) Kangaroo Eggs
D) Compiler error
Answer [=]
C
Explanation:
a=8 is an assignment not comparison. IF( Non Zero) is always TRUE.
3) What is the output of C Program.?
int main()
{
int a=9;
if(a==5);
{
printf(“Kangaroon”);
}
printf(“Eggsn”);
return 0;
}
A) Eggs
B) Kangaroo Eggs
C) No output
D) Compiler error
Answer [=]
B
Explanation:
Notice a Semicolon at the end of IF(a==5);. So IF block ends without any statements. Also, { } is not part of IF now. So it is executed without checking for any condition.
4) What is the output of C Program.?
int main()
{
int a=9;
if(a==9);
{
printf(“Ostrichn”);
}
elseif(a==8)
{
printf(“Eggsn”);
}
printf(“White”);
return 0;
}
A) White
B) Ostrich White
C) No Ouput
D) Compiler error
Answer [=]
D
Explanation:
Notice IFELSE statement. There should be one SPACE between IF and ELSE.
5) What is the output of C Program.?
int main()
{
int a=9;
if(a==9)
{
printf(“Ostrichn”);
}
else;
{
printf(“Eggsn”);
}
printf(“White”);
return 0;
}
A) White
B) Ostrich White
C) Ostrich Eggs White
D) Compiler Error
Answer [=]
C
Explanation:
Notice a Semicolon (;) at the end of ELSE. So ELSE is terminated immediately. Eggs Printf block is not part of ELSE and is always called.
6) What is the output of C Program.?
int main()
{
int a=9, b=5, c=8;
a=b=c=10;
if(a==9)
{
printf(“Ostrichn”);
}
else
{
printf(“Eggsn”);
}
printf(“White”);
return 0;
}
A) Ostrich Eggs White
B) Ostrich White
C) Eggs White
D) Compiler error as you can not assign to more than two variables at once.
Answer [=]
C
7) What is the output of C Program.?
int main()
{
int a=9, b=5, c=8;
if(!(a==9))
{
printf(“Bearn”);
}
else
{
printf(“Elephantn”);
}
printf(“Fox”);
return 0;
}
A) Bear Fox
B) Elephant Fox
C) Fox
D) Compiler error
Answer [=]
B
Explanation:
Logical Not Operator ( ! ) changes true to false and false to true. So IF(false) is not executed.
8) What is the Priority of C Logical Operators.? NOT (!), AND (&&) and OR (||)
A) NOT (!) > AND (&&) > OR (||)
B) NOT (!) > AND (&&) = OR (||)
C) AND (&&) > OR (||) > NOT (!)
D) AND (&&) = OR (||) > NOT (!)
Answer [=]
A
Explanation:
Logical NOT Operator in C has the highest priority.
9) What is the output of C Program.?
int main()
{
int a=9, b;
b = (a==9) ? (printf(“CATn”);printf(“DOGn”)) : (printf(“FOX”));
return 0;
}
A) CAT DOG
B) FOX
C) CAT DOG FOX
D) Compiler error
Answer [=]
D
Explanation:
You can not put more than 1 statement inside expression1 or expression2 inside Ternary Operator.
(Condition)?(expression1):(expression2)
10) What is the output of C Program.?
int main()
{
int a=9, b=6;
if(a==9 && b==6)
{
printf(“Hockey”);
}
else
{
printf(“Cricket”);
}
return 0;
}
A) Cricket Football
B) Hockey Football
C) Football
D) Compiler error
Answer [=]
B
Explanation:
== operator has more priority than &&. Logical && AND operator returns true only if both expressions are true.
11) What is the output of C Program.?
int main()
{
int a=9, b=6;
if(a!=9 || b==6)
{
printf(“Hockeyn”);
}
else
{
printf(“Cricketn”);
}
printf(“Football”);
return 0;
}
A) Cricket Football
B) Hockey Football
C) Football
D) Compiler error
Answer [=]
B
Explanation:
Logical OR || operator returns true if any one expression is true.
12) Choose a correct C Operator Priority.? Items in one group ( ) has same priority.
A) ( ! ) < (*, /, %) < (+, -) < ( <, <=, >, >=) < (==, !=) < (&&) < (||) < (=)
B) (( ! ) , (*, /, %) , (+, -)) < ( <, <=, >, >=) < (==, !=) < (&&) < (||) < (=)
C) ( ! ) > (*, /, %) > (+, -) > ( <, <=, >, >=) > (==, !=) > (&&) > (||) > (=)
D) (( ! ) , (*, /, %) , (+, -)) > ( <, <=, >, >=) > (==, !=) > (&&) > (||) > (=)
Answer [=]
C
Explanation:
( ! Logical NOT ) > (*, /, % Arithmetic) > (+, – Arithmetic) > ( <, <=, >, >= Relational) > (==, != Relational) > (&& Logical AND) > (|| Logical OR) > (= Assignment).
13) What is the output of C Program.?
int main()
{
int a=5, b=8;
if( a==5 && (b=9) )
{
printf(“Gorilla Glass=”);
}
printf(“%d %d”, a, b);
return 0;
}
A) 5 8
B) 5 9
C) Gorilla Glass=5 8
D) Gorilla Glass=5 9
Answer [=]
D
Explanation:
In IF( a==5 && (b=9) ), && Operator checks both expressions for true or Non Zero value. So after checking a==5, b=9 is checked. Here b==9 is checking, but b=9 is assignment. Any NON-Zero value is true only. So b=9 now.
14) What is the output of C Program.?
int main()
{
int a=5, b=8;
if( a==5 || (b=9) )
{
printf(“Gorilla Glass=”);
}
printf(“%d %d”, a, b);
return 0;
}
A) 5 8
B) 5 9
C) Gorilla Glass=5 8
D) Gorilla Glass=5 9
Answer [=]
C
Explanation:
Logical OR || checks wants only one TRUE condition. First expression (a==5) or even (a=5) is true. So second expression (b=9) is not evaluated and assignment not done. So b=8 only.
15) Choose a correct C Statement.
A) Nesting of ? : operator is possible.
B)
int main()
{
int a=5, b=8;
if( a>=5 || (b=9) )
{
printf(“Gorilla Glass”);
}
return 0;
}
//OUTPUT: Gorilla Glass
C)
int main()
{
int a=5, b=8;
if( a >= 5 && b <= 9 )
{
printf(“Gorilla Glass”);
}
return 0;
}
//OUTPUT: Gorilla Glass
D) All the above
Answer [=]
D
