The function fopen() on failure returns---------------------.
0
NULL
1
none of the above
Correct Answer :
B. NULL
Related Questions
= and = = have the same operation.
True
False
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 options shows the correct hierarchy of arithmetic operators
**, * or /, + or -
**, *, /, +, -
**< /< *< +<-
/ or *, - or +
continue statement is used
to go to the next iteration in a loop
come out of a loop
exit and return to the main function
restarts iterations from beginning of loop
If the class name is X, what is the type of its “this” pointer (in a nonstatic, non-const member function)?
const X* const
X* const
X*
X&
enum helps to create user defined datatype.
True
False
Union is used to hold different data at different time.
True
False
Variables declared as register storage type gets stored in CPU registers.
True
False
The function fopen() on failure returns---------------------.
0
NULL
1
none of the above
The identifier argv[] is a pointer to an array of strings.
True
False
The output of the following code is:
main()
{
int k, num = 30;
k = (num > 5 ? (num <= 10 ? 100 : 200) : 500);
printf("
%d", num);
}
{
int k, num = 30;
k = (num > 5 ? (num <= 10 ? 100 : 200) : 500);
printf("
%d", num);
}
200
500
30
Unpredictable
The-------------------- statement helps immediate exit from any part of the loop
break
continue
exit
All of the above
Left shift operator rotates the bits on the left and places them to the right.
True
False
The main() function can call itself recursively.
True
False
A function to be called must be ended with a----------------
.
?
;
none of the above
The expression 'int j = 6 + 3 % -9;' evaluates to -1.
True
False
Which of the following is an example of compounded assignment statement?
a = 5
a += 5
a = b = c
a = b
Identify the wrong statement
putchar(65)
putchar('x')
putchar("x")
putchar('
')
The output of the following code is:
int f(int a, int b);
void main()
{
int a = 12, b=154;
printf("%d", f(a, b));
}
int f(int a, int b)
{
if (a<b) return(f(b, a));
if(b==0) return(a);
return (f(b, a % b));
}
void main()
{
int a = 12, b=154;
printf("%d", f(a, b));
}
int f(int a, int b)
{
if (a<b) return(f(b, a));
if(b==0) return(a);
return (f(b, a % b));
}
2
1
Compilation error
Runtime error
The default initial value of automatic storage class is 0.
True
False
It is necessary to initialize the array at the time of declaration.
True
False
A multidimensional array A[10][9] can store-------- number of elements
91
88
90
89
The array 'char name[10] can consist of a maximum of 9 characters.
True
False
perror( ) function used to ?
Work same as printf()
prints the error message specified by the compiler
prints the garbage value assigned by the compiler
None of the above
fprintf()function can be used to write into console.
True
False
unsigned char has a range from 0 to ------------
253
254
255
256
p++ executes faster than p + 1.
True
False
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
Which of the following is not recommended in a header file?
Type definitions (typedefs)
Class definitions
Function definitions
Template definitions
------ is the ternary operator
?,-
?,:
++<--
none of the above