C Technical Questions
1) main()
{
int val=3;
switch(val)
{
default:printf("zero");
case 1: printf("one");
break;
case 3:
printf("three");
case 2:printf("two");
break;
}
}
Answer
:
threetwo
Explanation
:
Since
there is no break after case 3 the switch will executes all the cases until a
break is found. The misplaced default label will not cause an error. Because in
a switch default can be placed anywhere but will be executed last only if there
is no matching case statements
2.)
main()
{
int i=5,j=6,z;
printf("%d",i+++j);
}
Answer:
11
Explanation:
the expression i+++j is treated as (i++ + j) since postfix
operator have more precidence than prefix
operators.
3) main()
{
float i = 2.1;
double j = 2.1;
if(i==j)
printf("equal");
else
printf("unequal");
}
Answer:
Unequal
Explanation:
Both float and double will
store the value of 1.1 in its corresponding binary form the binary form of 2.1
is 10.00011001… with the values marked in
red as recurring. Since double stores more
fractional part than float its value will differ.
4.) void main()
{
char
ch;
for(ch=0;ch<=127;ch++)
printf(“%c
%d \n“, ch, ch);
}
Answer:
Infinte loo
Explanation:
The char type is signed by
default. on execution of ch++ when ch reaches 127 it rotates back to -128.
Thus ch is always smaller than 127.
this is also nice ....i m very impressed with ur first 2 parts of the question papers....which is awesme.........becaz in these parts u have given good explanation for understanding,,,and the main thing is quality of question is also veryy good.but the rest of the parts like ur 3,4,5,6,7 has no effect becaz it seems like a answer booklet..where u have written question and simply answer....SO FIRST 2 PARTS AWESOME MAN....AND I LIKE ONLY FIRST 2 PARTS...........the rest of the parts u hve to improve it...........
ReplyDeletemanish kumar Thanks for you suggetion. I will surely add explanation to all questions of each part. I always welcome your valuable suggetions.
ReplyDeletethank u Mr. Kishore....
ReplyDeleteits really helpful to every students like me...
thanks a lot...
xpecting more questions from you....
Nice explanation sir! thank u very much
ReplyDelete