The printf() function retunes which value when an error occurs?
Positive value
Zero
Negative value
None of these
Correct Answer :
C. Negative value
Related Questions
static variable will not always have assigned value.
True
False
Which classes allow primitive types to be accessed as objects?
Storage
Virtual
Friend
Wrapper
The output of the following code is:
void main()
{
int a;
int &b = a;
a=100;
printf("b=%d\ta=%d
", b,a);
}
{
int a;
int &b = a;
a=100;
printf("b=%d\ta=%d
", b,a);
}
b=100 a=100
b=100 a=0
b=0 a=100
Error
What is the right way to access value of structure variable book{ price, page }?
printf("%d%d", book.price, book.page);
printf("%d%d", price.book, page.book);
printf("%d%d"< price::book< page::book);
printf("%d%d", price>book, page>book);
It is necessary to initialize the array at the time of declaration.
True
False
The output of the following code is:
main()
{
xyz: goto abc;
printf("Hello");
abc: printf("World");
goto xyz;
}
{
xyz: goto abc;
printf("Hello");
abc: printf("World");
goto xyz;
}
Infinite loop
Hello World
World Hello
Compilation error
struct stud
{
int roll;
char name[20];
float marks;
} *p;
What will be the byte size of p?
24
2
26
None
What's wrong? for (int k = 2, k <=12, k++)
the increment should always be ++k
the variable must always be the letter i when using a for loop
there should be a semicolon at the end of the statement
the commas should be semicolons
A recursive function calls itself again and again.
True
False
When is std::bad_alloc exception thrown?
When new operator cannot allocate memory
When alloc function fails
When type requested for new operation is considered bad< thisexception is thrown
When delete operator cannot delete teh allocated (corrupted) object
Bitwise operators can operate upon?
double and chars
floats and doubles
ints and floats
ints and chars
A C variable cannot start with
An alphabet
A number
A special symbol other than underscore
both (b) and (c)
Which of the following is not recommended in a header file?
Type definitions (typedefs)
Class definitions
Function definitions
Template definitions
Which of the following is not true about preprocessor directives
They begin with a hash symbol
They are processed by a preprocessor
They form an integral part of the code
They have to end with a semi colon
The output of the following code is:
void main()
{
int a = 1, b=2;
int *ip;
ip=&a;
b=*ip;
printf("%d", b);
}
{
int a = 1, b=2;
int *ip;
ip=&a;
b=*ip;
printf("%d", b);
}
2
1
100
0
What's wrong? while( (i < 10) && (i > 24))
the logical operator && cannot be used in a test condition
the while loop is an exit-condition loop
the test condition is always true
the test condition is always false
A multidimensional array A[10][9] can store-------- number of elements
91
88
90
89
The output of the following code is:
void main()
{
static int a = 1, b, c;
if (a>=2) b=2; c=3;
printf("%d\t%d", b,c);
}
{
static int a = 1, b, c;
if (a>=2) b=2; c=3;
printf("%d\t%d", b,c);
}
2 3
0 3
0 0
2 0
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.
unsigned' is a valid variable name.
True
False
The array 'char name[10] can consist of a maximum of 9 characters.
True
False
fprintf()function can be used to write into console.
True
False
What does STL stand for?
Simple Template Library
Standard Template Library
Static Type Library
Single Type-based Library
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 an example of compounded assignment statement?
a = 5
a += 5
a = b = c
a = b
Which of the following keyword supports dynamic method resolution?
abstract
Virtual
Dynamic
Typeid
No commas or blanks are allowed within an integer or a real constant.
True
False
How many times the following loop will execute?
for (a = 0; a < 4; a++)
printf("hello
");
3
4
5
infinite
The output of the following code is:
void main()
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }
3.999999
Error
3
3.000000