The output of the following code is:
void main()
{
int a = 20;
printf("%d\t%d
", ++a, a);
}
{
int a = 20;
printf("%d\t%d
", ++a, a);
}
21 21
20 21
21 20
20 20
Correct Answer :
C. 21 20
Related Questions
Which of the following expressions is wrong
float a =123.56;
char ch ='T' * 'A';
char ch ='T' *20;
3 +a = b;
What is the difference between overloaded functions and overridden functions?
Overloading is a dynamic or run-time binding and Overriding is static or compile-time binding
Redefining a function in a friend class is called function overriding while Redefining a function in a derived class is called a overloaded fucntion.
Overloading is a static or compile-time binding and Overriding is dynamic or run-time binding
Redefining a function in a friend class is called function overloading while Redefining a function in a derived class is called as overridden fucnion.
A pointer is an indication of the variable to be accessed next.
True
False
The function fopen() on failure returns---------------------.
0
NULL
1
none of the above
The output of the following code is:
main()
{
int sub[50];
for(i=0; i<=48;i++)
{
sub[i]=i;
printf("
%d", sub[i]);
}
}
{
int sub[50];
for(i=0; i<=48;i++)
{
sub[i]=i;
printf("
%d", sub[i]);
}
}
0 to 48 will be displayed
48
49
Compilation Error
When a user defined function is defined in program, then it has to be called at least once from the main().
True
False
void' is a datatype.
True
False
The output of the following code is:
main()
{
int a = 0;
for (; i = 0; i++)
printf("%d", a);
}
{
int a = 0;
for (; i = 0; i++)
printf("%d", a);
}
0
Nothing will be displayed
Infinite loop
None of the above
Which one of the following is not a valid reserved keyword in C++
Explicit
Public
Implicit
Private
Nested macros are allowed.
True
False
Variables declared as register storage type gets stored in CPU registers.
True
False
C is a ___ language
High Level and Procedural
Low Level and OOPS
Middle Level and Procedural
Machine Level and OOPS
Which of the following is the most preferred way of throwing and handling exceptions?
Throw by value and catch by reference.
Throw by reference and catch by reference.
Throw by value and catch by value
Throw the pointer value and provide catch for teh pointer type.
The output of the following code is:
void main()
{
char a = 'B';
switch (a)
{
case 'A' : printf("a");
case 'B' : printf("b");
default : printf("c");
}
{
char a = 'B';
switch (a)
{
case 'A' : printf("a");
case 'B' : printf("b");
default : printf("c");
}
B
b
bca
bc
The main() function can call itself recursively.
True
False
p++ executes faster than p + 1.
True
False
do-while loop is useful when we want the statements within the loop must be executed
Only once
At least once
More than Once
Any one of the above
gets() and puts() are unformatted I/O functions.
True
False
The size of signed integer is ------ bytes.
4
2
8
10
What is right way to Initialization array?
int num[6] = { 2, 4, 12, 5, 45, 5 } ;
int n{} = { 2, 4, 12, 5, 45, 5 } ;
int n{6} = { 2< 4< 12 } ;
int n(6) = { 2, 4, 12, 5, 45, 5 } ;
C programs are converted into machine language with the help of
An Editor
A compiler
An operating system
None of the above
What's wrong? (x = 4 && y = 5) ? (a = 5) ; (b = 6);
the question mark should be an equal sign
the first semicolon should be a colon
there are too many variables in the statement
the conditional operator is only used with apstrings
The contents of a file opened in 'r+' mode cannot be changed.
True
False
No commas or blanks are allowed within an integer or a real constant.
True
False
What will be output if you will compile and execute the following c code?
#include
int main(){
int i=320;
char *ptr=(char *)&i;
printf("%d",*ptr);
return 0;
}
int main(){
int i=320;
char *ptr=(char *)&i;
printf("%d",*ptr);
return 0;
}
1
64
320
Compiler Error
The same variable names of automatic type can be used in different functions without any conflict.
True
False
Left shift operator rotates the bits on the left and places them to the right.
True
False
The expression (i + j)++ is illegal.
True
False
Which of the following is a valid destructor of the class name "Country"
int ~Country()
void Country()
int ~Country(Country obj)
void ~Country()
Which options shows the correct hierarchy of arithmetic operators
**, * or /, + or -
**, *, /, +, -
**< /< *< +<-
/ or *, - or +